Gmod error

As of around 2 days ago, I keep getting “The steam servers are currently too busy to handle your request. Please try again in a few minutes.” It’s constantly happening, so it’s not like it’s something for a few minutes. How should I solve this? I already tried deleting clientregistry.blob.

So you get this message when you try to launch GMod, correct?

Have you tried restarting Steam, or reinstalling GMod?