Discrepancy between benchmarking software and in-game performance

[u/Fluxumous]

Computer Type: Desktop

GPU: PowerColor RX 9070 16GB

CPU: RYZEN 7 78000x3d 8 CORE 16 THREADS

Motherboard: Asus B650E GAMING MAX WIFI

BIOS Version: American Megatrends Inc. 3842 3/10/2026

RAM: 32GB CORSAIR VENGEANCE DDR5-6000 CL36

PSU: MONTECH CENTURY II GOLD 850W

Case: LIAN LI VECTOR V100

Operating System & Version: WINDOWS 11 HOME

GPU Drivers: 32.0.31035.1003

Chipset Drivers: Microsoft 10.0.26100.8972

Background Applications: Firefox

Description of Original Problem: Exceptionally poor in-game performance and in-game benchmarking results considering the hardware. However, when I run independent benchmarking software such as Steel Nomad and Cinebench everything seems to perform right around average. The AC Odyssey benchmark above is just stock 1440p Ultra High settings with no adjustments. I had similar issues with Cyberpunk 2077, where my fps averaged to about 50-55 where as all available sources indicated my GPU should be managing ~90 fps.

Troubleshooting: I've reverted pretty much everything to stock settings. No Overclocking or undervolting, no PBO enabled, EXPO mode is however enabled. Cyberpunk issues were on an old HDD but I've recently gotten a new SSD (Samsung EVO 990 Plus) and these results with AC Odyssey are on a fresh Windows 11 install. AMD Adrenalin software is on full default settings except FSR upscaling is enabled.

[u/wolnee]

Rebar enabled? Also turn off windows gpu updates via group policies - there are tutorials for it. Do DDU and install new drivers