Performance Related Issue - Frame Drops, Lag

Hi, I’ve Using iPhone 12 Pro But I’ve Some Performance Related Issues While I’m Playing Some Heavy Gameplays..I’m Noticing Sudden Frame Drops, Freeze Frames, Lag And Much More..I Currently Updated My iOS Version To 14.2 But The Issue Still Remain Same. I Also Tried To Reinstall The App But Nothing Solved.
Tell Me Is It A Software Relate Issue or I’ve Got A Faulty Device.
I noticed this too.
iPhone 12 slows down drastically when heating (like in games or something heavy like that) but is excessive.
Performance Related Issue - Frame Drops, Lag
 
 
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