Game making my computer extremely slow after the update on 4/20/2016

I've just downloaded the newest patch for cf (blue crystal m4,awn, and shovel) before today, the game is running perfectly and really smoothly. Now when I logged it, I've realized that first the mouse control is "lagging", there's a huge delay. Also, I have a software that indicates how the system is working by showing a percentage (usually is around 23-34%) when I quitted the game, the meter is at 94 and the software is telling me that a program is using too much CPU and it cause slow fonctioning. Idk if anyone else have the same problem and please leave me some suggestion. Thank you

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