Someone posted a pretty good comparison video of Overwatch performance on Windows vs Linux: https://www.youtube.com/watch?v=voXc1nCD4IA Windows runs hotter and tends to have a slightly lower average framerate with a much lower 1% low. In the case of Borderlands, 1 and 2 have much better performance than what I saw on Windows, and TPS pretty much identical to Windows performance. Borderlands 3 is about a little slower on Linux, but I'm guessing that has to do with DXVK's incomplete DX12 support. Overall, the Borderlands franchise is completely playable on Linux, and oftentimes a better experience.

Also, I refrained from listing more games out of respect for your time. Out of the games I've tried, I've noticed better performance in the following: Team Fortress 2, MGSV The Phantom Pain, Valheim, Fallout 4, CS:GO, Insurgency, Mirror's Edge, Payday 2, Warframe, Prey, Kerbal Space Program, DOOM (2016), and Terraria.

If I had a larger library, I'd probably try more games.