RTX 5090 build stuttering after a Windows update can come from drivers, shaders, power settings, background tasks, or game config. Check update history, clean driver installs, thermals, and frame-time data before replacing parts.
An RTX 5090 build that stutters after a Windows update is usually a driver swap plus a shader-cache reset, not a hardware fault. Windows often reverts your tuned NVIDIA driver and clears the DirectX shader cache, so the first session stutters while shaders recompile. Reinstall the latest Game Ready driver, let each game pre-compile shaders once, and disable HAGS if stutter persists. Most post-update stutter clears within one play session.
Two things happen during a major Windows update: your hand-installed NVIDIA driver may be replaced with a generic one, and the shader caches are wiped. On a 5090 the first run of any demanding game then stutters as it rebuilds thousands of shaders in real time. This is traversal-style stutter, not a frame-rate drop, and it eases after the first run.
Run DDU in Safe Mode if the driver was swapped, then install the current Game Ready build fresh. Let each game finish its initial shader compilation; in titles with a pre-compile step, run it before playing. Clear the DirectX shader cache once via Disk Cleanup, then let it rebuild cleanly rather than fighting a half-corrupt cache.
If stutter survives the first session, toggle Hardware-Accelerated GPU Scheduling (HAGS) off and retest; it helps some titles and hurts others. Cap your frame rate just under your monitor's refresh (say 138fps on a 144Hz panel) to smooth frame pacing, and confirm Resizable BAR is on in BIOS, which the 5090 relies on for consistent 4K delivery.
The update reverted your driver and wiped the shader cache, so games recompile shaders on first launch. The stutter is temporary and clears once each title rebuilds its cache.
Sometimes. HAGS smooths some games and worsens others, so test it both ways per title. Toggle it, restart, and replay the same scene to compare.
Capping just below your refresh, such as 138fps on a 144Hz panel, improves frame pacing and removes micro-stutter. It also lowers heat and power on a 575W card.
After the update, reinstall the latest Game Ready driver and let each game pre-compile shaders once. If stutter lingers, toggle HAGS off and cap FPS just under your monitor's refresh.
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