Screen record low quality and Game Lags (Performance issue)

I’m using an iPhone 12 pro max 256 go unlocked variant pacific blue unlocked version Recently I have been facing Lag issues while playing PUBG and frame drops and screen recording quality has reduced so much as well Games like Asphalt 8 loads with a pink screen. This is not what I expected from A14 bionic chip my iPhone 11 Pro Max performs way better kindly fix this issue ASAP I purchased this phone basically because of its performance And I am getting the worst performance you’re taking 1000$ for a phone at least make it worth it please and The phone Over heats as well. Please Fix it

I've got an iPhone 11, while gaming it gets so hot and when screenrecording it just gets worse than my low end device, please fix this apple!

Screen record low quality and Game Lags (Performance issue)
 
 
Q