My game is more buggy what the hell!

So after doing that post about the Y and U thing/bug/whatever_the_hell_it_is when i choose a hl2 gun and the thing up there on the hud doesn’t show up (I don’t know how to explain this)
Instead of getting there a list of the guns and stuf like in hl2 it doesnt show up and auto-matically chooses the guns and stuff without the hud, this is really bad for me that I mostly play darkrp and I need to find the slot where the gun i just got is. I dont know if it is cause by any addons. BUT HELP MEH!

Pause>Options>Keyboard>Advanced…>Uncheck “Fast Weapon Switch”

… I must be retarded…