So in the past couple of days my TF2 has started using crazy amounts of my CPU. On task manager, even when i'm just staring at a wall, my CPU usage randomly jumps beyond 50%, and I've been noticing 30+ frame drops randomly in firefights. My CPU isn't exactly good but it still had no problem running at 90+ fps even in 6s firefights before.
Is there a fix or is this just normal and I've never noticed it before?