Question 100 CPU usage when playing Rainbox Six Siege

[Virus115]

Suddenly I'm using 100% CPU when playing Siege, I didn't use that before. What could that be?

My specs are:
Intel Core i5-7400 Kaby Lake
HyperX Fury DDR4 16GB
Geforce GTX 1060 6GB Phoenix

 

[kanewolf]

Could be lots of things: graphics driver update, windows update, game patch, different background tasks ...
There is no definite answer.