Recently my I5 6600K has started to perform sluggishly in all video games that I test. Just last week I was getting normal usage across daily tasks, and during gaming. But now even when in loading screens my CPU usage is hammered to 100%. and during CPU intensive games like Battlefield 1 my frame rate is getting crippled down into the teens of fps. http:// What could be causing these issues all of the sudden and how can I resolve them? The rest of my PC consists of GTX 980TI, 16Gb ddr4 ram, 600w Bronze EVGA PSU. 1TB HDD.