Attribute Counter takes forever (Cubase 12)

I’ve been using Cubase 12 since it just came out, and I have recently installed the 12.0.1 version too.
I’m experiencing slowww loading times in the Media Bay. It’s caused by the “Attribute Counter” that takes a longg time to count down from, let’s say 30 to 0.

Weird thing is; I don’t have this problem in Cubase 11, installed on the same system.

Does anyone know what I can do to fix this?