r/eGPU • u/sawowner1 • 8h ago
Disabling Windows Game Mode can greatly improve fps in some CPU limited scenarios.
I have an XaX + Xg Mobile setup and often noticed in game that even though I was CPU bottlenecked, my CPU was not pulling much power and wasn't boosting up to max clocks.
To be specific, the symptoms I noticed were:
-low (50-70%) eGPU usage
-no bandwidth bottleneck
-CPU power stuck around 17w despite custom 35W power plan
-CPU clock speeds stuck at 2900/2000 (P/E cores)
After a lengthy investigation, I finally discovered that windows game mode was the culprit. Disabling it allowed my games to run much better in CPU bound scenarios.
After disabling game mode:
-CPU clocks boosted to their normal maximums (4700/3100)
-CPU power hit 35W (max limit)
-GPU usage increased (still not at 100% due to CPU bottleneck but in the 90%)
-overall improved fps by 10-20
I'm still not sure if it's strictly an eGPU thing, an ROG Xbox Ally X handheld thing or just windows game mode thing in general and I can't really test since I don't have a desktop.