Solved Windows Explorer Problem

Hi guys! I've got a weird problem since yesterday, I thought I could fix it by myself, but nothing works.
Ok, let's start from the beginning - I downloaded Gramatik discography from here - https://www.facebook.com/gramatik/posts/10154369063860341, then I was changing names and covers in Aimp3 Advanced Tag Editor, everything was ok, but I had a problem with one song, I couldn't rename it or add cover. I closed this application and tried to rename it normally, on desktop - didn't work as well. I can't delete it too. Since then nothing works as it should. I can copy, paste or delete other files, but it takes ages or freezes. Folders are loading now much slower (green bar at the top of the folder). Also, Windows Explorer uses something like 30% of CPU, same like COM Surrogate.

I don't really know what happened and what to do. It's kinda like my first problem with Windows I can't handle by myself. So yeah, I'd appreciate any help.
Thank you

What security software is in use? Might have picked up a bug?

I assume you're talking about antivirus as security software? If yes - I'm using AVG and maybe that's true, I had a problem with it and explorer not so long ago, but it just disappeared back then.

Edit. I completely forgot I wanted to delete AVG, but now that I did it I could normally delete this song and it seems everything is ok now. Thank you, sir:thumb: