Garrys Mod Steam Validation Rejected

OK almost every single time i go on a server right when im in the middile of the game i freeze and everyone around me freezes,i can see peoples names pop up when they talk on the mic,and i cant do anything,and kill doesnt work.when i leave the server and rejoin it says Steam valadition rejected and i have to wait a couple minutes to rejoin.Please help.Thank you

Reinstall Garry’s Mod. Report back once it has been done.

This happens to me when i am on wifi and i connect and ethernet cable, Since steam don’t allows two same steamid’s on one server, you must wait till you will be auto-kicked, or you can tell someone to kick you. Reinstalling will not fix this.