Sometimes after a new chapter was loaded, i didn't have my weapons, so i would have to commit suicide to get them back. The melee attack stopped working too a lot of times when i respawned.
I Am also experiencing some weird delay of about 0.2 - 0.5 seconds. I have this when i shoot, move and even in the menu. There was nothing of the kind when i played the demo. I have tried setting the graphics down to the lowest settings, but it didn't change anything at all.
Also, i couldn't log into my gamesas account (in the demo or the full game), so i have just been logged into crysis with one account, and on gamesas with another, but when i used my crysis pre-order code, i didn't realize this, so i have signed my pre-order content up to the account i can't play on.