Arm ASR is a temporal upscaler intended to help Fortnite render more efficiently on mobile, but Epic currently says its Android setting is temporarily disabled. Epic has not announced when it will return, and Arm’s performance claims are not backed by a quantified Fortnite benchmark in the cited announcement.
What Arm ASR does in Fortnite
Arm Accuracy Super Resolution (Arm ASR) is a temporal upscaling technology. It starts with graphics resources rendered at a lower resolution, then uses information accumulated across frames to reconstruct a higher-resolution image. Arm says the approach is derived from AMD FidelityFX Super Resolution 2; its developer tutorial identifies FidelityFX Super Resolution 2 version 2.2.2 as the basis and describes preserving fine geometric and texture detail compared with native rendering.
That describes how the technique is designed to work, not a Fortnite-specific image-quality result. How it looks in play can depend on the game, device, settings, and implementation.
Why the Arm ASR setting is missing on Android
Epic’s Android support page says the Arm ASR graphics setting is temporarily disabled and will be re-enabled in a future update. The notice gives no return date. It also does not establish that every Android device will offer the setting once it is restored.
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Arm announced the Fortnite integration on June 3, 2025, describing Android and iOS support as “coming soon” at the time. That announcement is not a current availability guarantee; Epic’s support notice is the relevant source for the Android setting’s present status.
What performance improvement has actually been shown?
Arm says the Fortnite integration is intended to reduce GPU workload while improving frame rates, visual sharpness, and battery performance. These are Arm’s stated benefits. Its announcement provides no quantified Fortnite benchmark, device-by-device results, or measured battery-life gains, so there is no supported percentage or FPS figure to report.
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Arm’s Director of Developer Ecosystem Strategy, Peter Hodges, called it “an open-source upscaling technology developed to improve mobile gaming performance without compromising visual quality.” That is Arm’s characterization of ASR, not an independent comparative test of Fortnite.
What the Unreal Engine plug-in means for players
Arm described integrating ASR into Fortnite through a dedicated Unreal Engine 5 plug-in. Arm’s developer hub lists its Unreal Engine plug-in and generic library, with the plug-in available for Unreal Engine 5.3, 5.4, and 5.5. Its tutorial recommends those engine versions and covers installation and configuration.
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- Hall Effect Sticks: GameSir Hall Effect sensing sticks deliver 360° seamless pinpoint control, provide the precision and durability that mobile gamers demand
- Ergonomic and Lightweight Design: Stay comfortable during long gaming sessions with the X5 Lite. Weighing just 135.4g, its lightweight design and ergonomically laser-engraved textured grips ensure a secure, comfortable hold for hours of gameplay
- Cushioned and Durable Membrane: The X5 Lite is equipped with cushioned and durable membrane triggers and buttons. The cushioned feedback provides a comfortable experience while ensuring quieter operation
Those are developer resources, not a compatibility list for Fortnite players. They do not tell you which phones will support the game’s setting, or when it will be exposed again.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.How to compare mobile upscaling options
The available information does not establish a winner in a head-to-head comparison between Arm ASR and other upscalers. To assess any option when it is available, compare:
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- Compatible with Android devices and fits mobile devices ranging from 100mm to 170mm in length.
- Hall Effect Joysticks and Triggers
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- Image quality: Check sharpness and fine detail in motion, not only in a still image.
- Frame rate and GPU workload: Look for results on the same device, game version, and graphics settings.
- Battery behavior: A claim of improved efficiency is not a measured battery-life result; look for testing under comparable play conditions.
- Availability: Confirm that the setting is actually exposed for your device and game version.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
