Background errors

Whenever I play levels such as GM_excess_construct blockfort ect The background Goes all funny like motion blurred,The level works awesome but is un-enjoyable because of this background problem,Fixable?

Hey, I have the same problem with my server. If anyone replies please also say weather or not you know how to fix it on a computer.

You may want to reinstall the map. Corrupted files.

It still happens with fresh new maps AND ones with their own graphics pack.

Anyone going to bother helping??.

Screenshot would help

Hey. Load up gmod. Go to gmod settings. And make sure all of the possibles ones are checked in. Then restart gmod.

OK will try:).