Anything server with SV_pure 1 causes ear rape if you have custom sounds, this includes every valve server in existence.
They have been known to crash clients, so just ad the word valve to the server blacklist and sv_pure.
oddly enough it works perfectly with valve servers, no idea why
although I could try taking it out anyways for now, I have been exclusively playing valve servers for quite a while so maybe it is the problem
wait I think I just found out what it was
I completely forgot I added a custom conga sound to play take on me because it fit perfectly, that would explain everything since I haven't seen anyone conga at all lately and it happens fairly rarely anymore