Download another weapon model for css v34 (v84), namely awp eye of the tiger (from cs go workshop).
I personally tested it on all versions of css, I did not find any lags or bugs. In my opinion, thanks to such a bright coloring, this WUA will be popular. I'm also sure that once you install this awp for css, you'll spend a lot of time on servers with it, as it's quite handy to play with.