>>717858639Everything has worked for me but I don't play competitive games
I kept windows installed just in case
its been 4 years and I haven't logged on to it a single time
Ultimately though this question is so varied depending on who you are and some games involve waiting a little bit for proton patches to release. For example, I couldn't play Monster Hunter Wilds immediately. It didn't take long to get fixed but that could be disappointing for some people in some circumstances.
However, even if I did jump over to windows whenever something like that happened, I would have only had to do so like once or twice, only for a brief period of time, in the last 4 years.
Your best bet to understand if it'll work out for you though is to just look up the games you play on https://protondb.com/