Start by resetting Fallout 4’s launcher settings, updating your graphics driver, closing overlays, and lowering the settings that cost the most—especially God Rays and shadows. For an unmodded game, aim for a stable frame rate around 60 FPS rather than uncapping it; use an SSD if loading and streaming are the problem. If you want to go beyond those steps, first identify whether your limit is the GPU, CPU, storage, or a mod—and check that any fix supports your exact game build.
First, identify what is running poorly
“Run better” can mean low average FPS, uneven frame pacing, long loading screens, or crashes. Those symptoms can have different causes, so record your resolution, refresh rate, approximate FPS, and where the problem happens before changing settings. If available, check GPU utilization and per-core CPU load; total CPU usage can look modest even when one thread is limiting a dense scene.
| Symptom | First areas to investigate |
|---|---|
| Low FPS in most locations | Resolution, GPU-heavy settings, driver, and GPU utilization |
| FPS drops mainly in downtown Boston or dense exteriors | CPU or engine limits, object distance, settlements, and worldspace mods |
| Hitches despite acceptable average FPS | Storage, VRAM and texture streaming, overlays, scripts, drivers, and frame pacing |
| Long loading screens | Whether the game and active mod files are on an SSD, plus asset load and loading configuration |
| Crashes or freezes | Mods and plugins, game files, drivers, and Weapon Debris settings |
Fallout 4’s published minimum and recommended PC requirements date from the game’s launch era; meeting them does not promise smooth play at modern resolutions, high refresh rates, or with large mod lists. The listed minimum is an Intel Core i5-2300 or AMD Phenom II X4 945, a GTX 550 Ti 2 GB or Radeon HD 7870 2 GB, 8 GB RAM, and 30 GB storage. The recommended tier lists an Intel Core i7-4790 or AMD FX-9590, a GTX 780 3 GB or Radeon R9 290X 4 GB, 8 GB RAM, and 30 GB storage. These are not guarantees for a particular location or frame-rate target. (PCGamingWiki; Steam)
Establish a clean baseline
Test one change at a time so you can tell what helped. Choose a repeatable location and play there for 60–90 seconds, noting FPS, hitching, loading time, and any crash. Record your graphics settings and VSync state. If you use mods, note the profile and disable nonessential ones for the baseline; preserve saves rather than removing active mods casually.
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- Open the Fallout 4 launcher and select Options.
- Click Default to restore the launcher’s auto-detected graphics settings. Bethesda recommends this as a first troubleshooting step, but treat the result as a baseline rather than an optimal profile.
- If performance remains poor, apply a lower preset or resolution and test the same location again.
- Update the graphics driver from NVIDIA or AMD. If the issue started immediately after a driver update, test a known-stable previous version rather than changing several things at once.
- Close overlays and background software—such as recording tools, browsers, RGB utilities, hardware monitors, and Steam, Discord, NVIDIA, or AMD overlays—one at a time while testing.
- Use your storefront’s file-verification or repair function if files may be damaged. The exact menu path differs between Steam, GOG, Microsoft Store/Game Pass, and other editions.
Bethesda also suggests trying Borderless and Windowed Mode as a troubleshooting option. It may help with display or alt-tab problems, but it is not universally faster than fullscreen. Its performance guidance covers launcher defaults, lower graphics settings or resolution, closing background programs, driver updates, and resetting INI files. (Bethesda support)
On a laptop, plug into AC power, make sure Windows or the GPU control panel assigns Fallout 4 to the discrete GPU, and check for thermal throttling. Bethesda’s black-screen guidance describes selecting Fallout4.exe and assigning the high-performance graphics processor in NVIDIA settings. Do not disable thermal protections. (Bethesda support)
Lower the most expensive graphics settings first
Change a few costly options before dropping every setting. The right balance depends on whether the GPU is actually the limit: reducing textures, for example, is unlikely to fix a CPU-limited Boston scene.
- God Rays / volumetric lighting: Lower or turn them off first when GPU use is high, particularly in outdoor scenes. The trade-off is less dramatic lighting.
- Shadow quality and shadow distance: Reduce these before aggressively cutting all object detail. Shadows can add both rendering and scene workload.
- Object, actor, and item fade distances: Lower them if FPS is poor while GPU use is low, especially in dense exteriors. Distant objects or NPCs may disappear sooner.
- Ambient occlusion: Lower or disable it when GPU-limited; contact shading will be reduced.
- Resolution: Keep native resolution if performance allows. If GPU utilization is near its limit, reduce resolution or render scale before resorting to blurry upscaling. Use third-party upscaling only if it supports your installed game build.
- Textures: Lower texture quality or test without the high-resolution texture pack if VRAM is close to full or texture streaming hitches. This mainly addresses memory pressure; it is not a general fix for CPU-bound FPS.
- Depth of field and screen-space effects: These may offer smaller gains. An optional INI change documented by PCGamingWiki is
bDoDepthOfField=0andbScreenSpaceBokeh=0under[Display]. It alters visual effects and can remove or change underwater effects, so back up the INI and revert if you dislike the result. (PCGamingWiki)
Weapon Debris: Set it to Off or a lower setting while troubleshooting crashes. Bethesda documents crashes associated with Weapon Debris set to High or Ultra; this is a stability step, not a general FPS boost. (Bethesda support)
A reasonable starting profile
For a simple, reversible test, start with the High preset rather than Ultra, lower or disable God Rays, reduce shadow distance and quality, and leave resolution at native unless the GPU is struggling. Keep Weapon Debris off while troubleshooting instability. This is a starting point, not a universal best-settings profile; compare it in the same location as your baseline.
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Use a frame-rate cap carefully
Fallout 4’s traditional engine behavior is designed around a 60-FPS-oriented game, and physics or other behavior can be affected by excessive or uncontrolled frame rates. For an unmodded installation, a stable cap near 60 FPS is the conservative choice—even on a 120 Hz or 144 Hz display. A steady 60 can feel better than unstable higher FPS.
Do not treat disabling VSync as a complete high-refresh fix. The legacy INI method is iPresentInterval=0 under [Display], but this disables the game’s internal VSync behavior and can allow rates above 60 FPS. It may cause physics or stability problems, and the traditional method may not behave as expected on post-next-gen builds. Use it only as a deliberate diagnostic or legacy adjustment, not as an uncapped solution. (PCGamingWiki)
Move the game to an SSD for loading and streaming issues
An SSD can improve loading and asset-streaming behavior compared with a mechanical hard drive, but it will not necessarily raise FPS in a GPU-limited scene or a CPU/engine-limited downtown area. Move Fallout 4 and its active mod files to the SSD, not just the launcher, and leave reasonable free space. Results depend on the drive, CPU, edition, and mod load; an older PCGamingWiki community comparison is directional evidence, not a guaranteed loading-time reduction. (PCGamingWiki community report)
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Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallFor higher FPS, use a compatible physics solution
If you intentionally want to play above 60 FPS, the community High FPS Physics Fix is designed to address Fallout 4’s frame-rate-dependent behavior. It is not a universal first fix: it requires a compatible Fallout 4 Script Extender (F4SE) setup and any required dependencies, and support can depend on the exact executable version. Check the mod page’s supported-version information immediately before installing, particularly after a game update. Bethesda’s post-next-gen notes document PC graphics-fidelity and performance-control changes, while its earlier notes cover widescreen and ultrawide support; neither means every plugin supports every PC build. (Bethesda Update 2 notes; Bethesda patch notes)
- Identify your storefront edition and installed executable version, and confirm whether the installation uses F4SE.
- Check the High FPS Physics Fix page and all dependency pages for support for that exact build before installing. Prefer a mod manager or keep a recoverable profile and INI backup.
- Set a deliberate frame cap rather than targeting the monitor’s maximum by default. Test interiors, exteriors, loading screens, and physics-heavy scenes; very high rates can still expose engine problems.
- To check whether the plugin loaded, inspect
C:Users<username>DocumentsMy GamesFallout4F4SEf4se.logfor a line indicatingHighFPSPhysicsFix.dllloaded correctly. Its configuration file isFallout 4DataF4SEPluginsHighFPSPhysicsFix.ini. (High FPS Physics Fix mod page)
Above 120 FPS, additional engine and physics problems may remain; that warning comes from community documentation, not a Bethesda guarantee. (PCGamingWiki)
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Diagnose Boston drops and other CPU-limited scenes
If GPU use is low while FPS falls in downtown Boston, settlements, or another dense exterior, a faster graphics card may not solve the limit. The game can be constrained by CPU or engine workload, including scene complexity, object draw calls, or mods. Compare an interior with the problem exterior and check per-core load or frame times rather than relying on total CPU percentage alone.
- Reduce object and actor fade distances and shadow distance, then retest.
- Temporarily disable settlement-, script-, or worldspace-heavy mods and compare the same save/location if safe to do so.
- Check for mods that alter the same worldspace or precombine data. Consider a compatible precombine/previs repair only after reading its requirements and compatibility restrictions.
- If GPU utilization is high instead, prioritize resolution, God Rays, shadows, ambient occlusion, and VRAM pressure.
Use performance mods selectively
Community tools solve different problems; they are not a mandatory all-in-one pack. PCGamingWiki lists options including High FPS Physics Fix, Previsibines Repair Pack, Dynamic Performance Tuner and Load Accelerator, Special K, and texture alternatives. Their purpose, compatibility, and maintenance requirements differ. Verify the exact game-version support and requirements, and install one change at a time. Precombine/previs repairs can have worldspace and DLC constraints; a dynamic performance tool may not support every current game branch. (PCGamingWiki)
The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →- Frame/physics tools are for players deliberately targeting above 60 FPS, not a substitute for reducing GPU workload.
- Precombine/previs tools may help with world rendering problems but require careful compatibility checks.
- Texture alternatives can reduce storage or VRAM/streaming pressure; they do not guarantee higher FPS in CPU-limited scenes.
- Stability tools address crashes or memory-related behavior, not necessarily rendering speed.
- Content mods can add scripts, NPCs, assets, and world edits that increase workload. Test them as potential causes as well as features.
For a clean diagnosis, reproduce the problem with mods disabled, then re-enable them in batches in a separate profile. Do not remove active mods from a save without understanding the consequences. Bethesda likewise recommends removing mods during persistent-crash troubleshooting. (Bethesda support; Bethesda support)
Reset INI files or recover from a crash
If settings refuse to stick or unexplained problems persist, back up your configuration folder before resetting it. The usual folder is C:Users<username>DocumentsMy GamesFallout4. Back up, then remove Fallout4.ini, Fallout4Custom.ini, and Fallout4Prefs.ini; launch the game to generate fresh files. Reapply changes gradually rather than restoring an old INI wholesale. Bethesda lists an INI reset among its performance troubleshooting steps. (Bethesda support)
- Undo the last INI edit or remove the last mod/plugin you added; restore your backup if needed.
- Turn Weapon Debris off or down if it is High or Ultra.
- Verify or repair the game files through your storefront.
- Test with mods disabled before changing drivers or reinstalling.
- If the issue began after a driver update, try a known-stable prior driver; otherwise install the current driver from the GPU manufacturer.
- Reinstall only if a clean test indicates corrupted files or an installation problem, then rebuild the mod setup incrementally.
Choose the profile that fits your goal
| Use case | Practical starting point |
|---|---|
| Vanilla, stability-first | High preset; lower or disable God Rays; Weapon Debris off while troubleshooting; stable cap near 60 FPS; SSD preferred for loading |
| Low-end PC | Try 1080p or 900p if GPU-limited; use a Medium/High mix; lower God Rays and shadow/object distances; test without a high-resolution texture pack if VRAM is constrained |
| High-refresh monitor | First establish stable 60 FPS; pursue a higher cap only with a compatible physics/frame-pacing setup checked against the exact game executable |
Before adding a tool, identify whether the symptom is rendering speed, frame pacing, loading, or stability. That diagnosis determines whether the useful change is a graphics setting, SSD, driver, mod test, or controlled frame cap—not a generic optimizer.
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