If you use Nvidia stick to windows 100%
DX12 performance on linux drivers. Gone a long way, but a very long way to go. Nvidia linux driver release cycle very slow, talking months. Windows is almost every month and many hotfixes.
AMD. Go for Linux, give it go as worth it. Don’t dual boot same drive, separate drive as sometimes windows update has history of messing with bootloader affecting the Linux partition. Some games run better, some worse. But AMD shows more consistency than Nvidia when it comes windows vs linux.
Whether Nvidia or AMD - Keep windows as secondary OS and not nuke to go full Linux. Anti-cheat, won’t work in Linux in some games. Apex Legends, Tarkov, Rainbow six, Battlefield 6 etc You never know there might be such games you want to play in future, even if you’re not interested in the ones now.
There are people that choose Linux with Nvidia and accept the performance loss range from 15-20% in certain games. That’s because they want the privacy, freedom and less bloated OS experience, or maybe they want to do other AI/simulation/CUDA stuff that benefits in Linux. But 15-20%, that’s like a whole GPU tier.