I have a Pixel 8 and often use a generic 65W charger with it. The phone gets noticeably hot when charging more than 20%, I try to keep it between 40-80%.

Usually copper heatpipes that are found in most air coolers have a drop of liquid in them to boost perfomance.

You should try battlebit

For me it has been running just fine with 7900XTX on a 4k TV all settings on Epic. Stutters only occur occasionally in a few places. I only started playing it a week ago though so there might have been some patches.