Hmm. What solution would you propose if you were in a position to do that ( change linux in a way that allows you to play online games like new Battlefield )?

I don't know enough to understand what prevents it I guess. I thought it was a matter of game or anti cheat developers not writing software that will cooperate properly. It's a chicken and egg problem, has been for decades.

Believe me I would love to drop Windows.

That's fair. I don't want to sound too cynical with a reflexive 'money' response. As you note, some of it is indeed a question of software not playing nice together. I have zero solutions for this.

Tbh, it sounds like you may be forced to use a Windows VM ( if you want try 'dropping' windows that way ). Last time I was looking at it, VMs were still fair game, but were starting to be identified as a way to bypass some of the restrictions ( mostly because they were only doing a couple of checks for whether OS is in a VM ). That said, few friends were recently sharing pics suggesting those checks were getting more invasive.

<< Believe me I would love to drop Windows.

Just in case it helps, I went through a major system issue at some point with Windows 7 and once it was clear that CPU/GPU passthrough works surprisingly well ( before nvidia started messing with it after 3060 ), I got a way to ease myself in with better fallback position should my linux install fail somehow. This approach ( OS engaged for a specific purpose ) worked better than dual boot, which in practice was never used. There is some learning curve, but nothing excessive or something that is not well covered online.