Quick Answer

Low FPS in Honkai: Star Rail on the Radeon RX 7900 XTX is usually a settings, power-plan or driver problem, not a weak card. Set Windows to High Performance, update the driver via AMD Software: Adrenalin Edition, cap background apps, and enable FSR 3 in Quality mode — most setups recover 20-40% of their frame rate this way. the Radeon RX 7900 XTX should comfortably exceed 60 fps in this title once those are sorted.

Settings and driver fixes on the Radeon RX 7900 XTX

Confirm the driver is current through AMD Software: Adrenalin Edition with a clean install, then set Windows to the High Performance power plan so the card isn't down-clocking. Drop the heaviest effects — volumetric fog, ray-traced shadows, screen-space reflections — to Medium and enable FSR 3 Quality. A high-end-class GPU around R22,000 at Evetech has the headroom; low numbers nearly always trace back to a power plan or a background app eating cycles.

Rule out CPU and RAM bottlenecks

If FPS stays low even on Low settings, the limit may be elsewhere: a 4-core CPU or 8GB of RAM throttles modern titles regardless of the GPU. Aim for at least a 6-core Ryzen 5 / Core i5 and 16GB of dual-channel RAM to let the Radeon RX 7900 XTX stretch its legs. Watch GPU utilisation — if it sits below 90% during the drops, the bottleneck is CPU or memory, not the graphics card.

Quick wins checklist

Close browsers and overlays, disable Game DVR/background recording in Windows, and turn off any FPS cap fighting your refresh rate. Verify the game files so a partial update isn't dragging performance. Evetech stocks matching CPUs, RAM kits and the GPU itself locally if a real bottleneck shows up after these checks.

FAQ

Why is my FPS low in Honkai: Star Rail when the Radeon RX 7900 XTX should be fast?

Most often the Windows power plan is on Balanced and the card is down-clocking, or a background app is stealing cycles. Switch to High Performance, do a clean driver install, and frame rates usually jump on the Radeon RX 7900 XTX.

Does FSR 3 upscaling help low FPS without ruining image quality?

Yes. FSR 3 in Quality mode renders at a lower internal resolution and reconstructs the image, typically adding 20-40% FPS while staying close to native sharpness on the Radeon RX 7900 XTX.

How do I tell if it's my CPU and not the Radeon RX 7900 XTX?

Check GPU utilisation during the drops. If it's below 90% while FPS is low, the bottleneck is your CPU or RAM, not the Radeon RX 7900 XTX — a 6-core CPU and 16GB of RAM resolve it.

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