Two of the most talked about issues of the POCO F3 are the Touch Issues and the screen dimming during heavy gameplay and users were hopeful that a software update would resolve these issues. I recently updated to MIUI 12.5 and I'm happy to report that both are resolved. 

I played Genshin Impact for more than 30 mins and never experience any screen dimming. This may also be because the highest temperature I recorded was 42.7 degrees celcius compared to the 45.8 degrees celcius I recorded before the update.

As for the Touch issues, I've updated last June 12 and have yet to experience the same touch issues before the update.