So recently I upgraded my iMac 4K (2017) from i5 7400 to i7-7700K (delidded), also went from 8GB to 32GB of RAM. I noticed that everytime I export audio in DAW, the temps are growing up to ~ 80°C and system is lagging very much. I can't even move the cursor. What's even more the power supply is producing weird buzzing sound. Well I am considering downgrading to 7400. Are those temps normal? How can I prevent my computer from lagging?