AMD's 26.8.1 notes do not list Flight Simulator stutter as a known issue. Capture a baseline, remove variables and use a controlled rollback to test the claim.
A stutter that appears after a driver update is suspicious, but timing alone does not prove the driver caused it. AMD's own 26.8.1 notes do not list Microsoft Flight Simulator stutter as a known issue.
Capture a repeatable Flight Simulator baseline on Adrenalin 26.8.1, remove overlays and background variables, then compare the same route after a controlled rollback to the previous supported driver. Let shader caches settle before measuring. Only a repeatable improvement under matched conditions supports a driver-regression conclusion.
Record the aircraft, airport, route, weather, time, graphics preset, resolution and frame-rate cap. Note whether the stutter appears on the ground, during camera movement or after a set flight time. Save the installed driver version and Windows build.
AMD released Adrenalin 26.8.1 on 20 August 2026. Its official known-issues list covers several titles but not this Flight Simulator symptom. That absence does not prove the report is impossible; it means the article must not present it as an AMD-confirmed defect.
Use a fixed frame-time graph rather than only average frame rate. Current AMD Radeon graphics cards vary widely, so compare results on the same installed card.
AMD documents normal removal through Windows Apps. Reboot, install the chosen earlier supported package and keep the same graphics options. Use AMD Cleanup Utility only when ordinary removal leaves conflicts or the installation fails, following AMD's own instructions.
The first flight after a change may rebuild shader data. Complete a warm-up pass, then repeat the measured route. Do not compare a cache-building first run with a settled run on the other driver.
If 26.8.1 stutters and the earlier driver does not under matched conditions, repeat the switch once more if time allows. If both versions behave alike, inspect add-ons, CPU main-thread load, online data, storage and overlays.
Keep the simulator's rolling cache, traffic, weather and photogrammetry state matched between passes. Network-fed scenery can produce a hitch that resembles a graphics-driver problem. Testing the same offline-friendly scene can help separate content delivery from local rendering.
The AMD Radeon gaming PC selection helps compare complete platforms, while gaming monitors matter when sync range or frame caps are involved. Neither purchase path replaces evidence from the affected machine.
Once the comparison is complete, keep the driver that is stable for the required games and document the reason. Do not chase a newer version merely because its number is higher; read its official support notes and reassess when it contains a relevant fix.
No. It is not named in the official known-issues list, so the symptom needs local verification.
No. Start with AMD's ordinary Windows uninstall process and use the utility when conflicts or incomplete removal justify it.
Cache building can create temporary stutter. A later matched pass better represents steady driver behaviour.
Ready to prove or dismiss the rollback theory? Save one controlled route, measure both supported driver versions, and let the repeated frame-time result decide the next step.
No. The official known-issues section does not identify that symptom, so treat it as an unconfirmed local report until testing proves otherwise.
Capture the route, aircraft, weather, graphics preset, frame-rate trace, driver version and background software for a repeatable comparison.
Yes. AMD documents uninstalling its software through Windows Apps before installing another supported package.
AMD positions it for removing prior AMD graphics and audio software when an ordinary uninstall leaves conflicts or installation trouble.
Yes. The first run can include cache compilation, so compare later passes through the same scene rather than judging only the first load.
A repeatable symptom on 26.8.1 that disappears on the earlier supported package under otherwise matched conditions is meaningful evidence.
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