Hi Pawel.
Thank you for reaching us here, we'll be glad to investigate this.
Do you still have Avast installed on your PC? If you do, please uninstall it and then try to scan using AVG.
This is a weird one, recently i've noticed my games started stuttering and while still playable, it got very annoying. My first thought was that somehow i've managed to get some sort of malware on my PC that's causing this since in the task manager a Node JS process started appearing and once terminated everything went back to running smoothly. A full on scan on Avast came up with no results so i decided to download AVG and here's where the problem starts, the first scan that ran made the program freeze, shortly after my desktop froze as well, everything went into not responding and finally i couldn't even Ctrl + Alt + Delete to try and bring up anything. The only thing working during this freeze is my mouse. After a reboot i tried running a full scan and the same thing happens over and over again. I tried looking for any solutions but so far to no results, any ideas? thanks.
We're so glad to hear that the issue has been resolved, Pawel.
If you need anything else, do not hesitate to let us know.