Source is this video:
Windows Was The Problem All Along - Dave2D
We could obviously compare performance between windows and steamOS before on the steam deck, or between windows and Bazzite on other handhelds. But this is the first time we have had official windows and SteamOS builds for the same hardware.
So for real though, while it’s disappointing and I am nowhere near the 500+ hours i have put in previous titles, the hardware is not going to do it. The game eats VRAM like my brother’s ex ate cake.
But, I get about 5 fps @2k and 9FPS@1080p better on my Ubuntu image than my Windows 10 image.
Ryzen 9 5900x Radeon RX 7900 XTX 24GB 32GB DDR4, both images are on different 1TB nvme drives
So while, no you can’t, it’s closer.