In game freezing

How's your battery, and what is your phone? I noticed that my old S20 Ultra, which is still relatively a high-spec phone for this game,  but it does have a battery warning popping up (the phone remembers Season5 so the battery is old and worn out). The point is, the old phone struggles once the device heats up a bit or is charging. I don't consider it a major issue for me as I mostly play on my S25+, but sometimes I do fire up my old device, and I do see random performance drops once the temp goes up.