Perfect interval of mini-stutter starting today

Starting today, the game is freezing for about half a second every 5 seconds. I'm pretty sure this wasn't there yesterday, or any day before during my 200 hours playtime.

The same thing occurs on any graphic setting, in the game menu, in the title screen and when the game is paused. Same stutters and same time interval.

 

Specs: i7-7700K CPU, GTX 1080Ti, 16GB RAM DDR4, installed on an SSD

Are you using the unity console? Because I noticed it giving me a similar regular stutter. Hiding it with ctrl-f8 was enough to fix the problem, not need to uninstall.