[cannot move or do anything]

been playing for 60 + hours for now, and since yesterday, I cannot move or interact with anything unless press left control.

it just sticks to the ground, and stop doing anything. only thing I can do is moving sights.

restarted game and computer but still happening. Im not using cheat mode either.

I found few people reporting this few years back, but didnt get any solution for this matter.

can't even fight zombies so i have to restart the game everytime this happens which occurs in about 15~20 mins.

does anyone happen to know what to do with this matter?