Problems after Update.

Before Gmod Update 93, my game was running fine, but suddenly, now my game is almost unplayable.

It suddenly takes about 2 times longer to load a map, after opening the Gmod browse menu, my game will suddenly have a crazy fps drop for alt least 5 minutes, and my game will suddenly crash over any little thing, even a loading spawn list image.

The cause of all this may be a sudden error message I’m getting a ton of ever since the update.

"KeyValues Error: LoadFromBuffer: missing …"

It seems to be “missing” everything in my Gmod menu, is there anyone that can help, or will these problems be fixed in the next update?