Very high CPU usage

I own an i5 4590, with 4 cores and 4 threads. Whenever I play any game, the CPU absolutely maxes out and struggles to keep up. Although it is very old, it also chokes on games like Minecraft and Borderlands 2, which are both games that came before it. I was wondering if there was something software related that could be causing these spikes. I closed every background task and also ran malware bytes (which came negative). The CPU still chokes on 15 year old games. I need some advice