Hem there is a bug Im holding a crobar that is semi transperent.

That's due to the server's thinking rate being too slow or your connection to the server being too poor. If it's your server, try finding a new provider with better service or try removing some addons. I've been trying to work on a fix for this for a while, though.

I've got the same problem as ALE199-ITA

For a strange reason, the flavor menu is incomplete, some of the flavors doesnt appear.

Viewmodel issues are now fixed, nearly almost two years later. Finally got around to learning the modelling required to fix it. Unsure about the error @Bine is describing.

whenever i use the swep my fps drops instantly to 5 or below

I don't know if this is being developed anymore but for some reason when I hold it it causes so many errors and I don't know why.