Friend let me borrow his copy, Stevie's suggestion worked for me, still some stuttering in campaign but zombies ran fine.

I must say before you complain about it give it a go, very promising and with the new features can't wait to see what custom maps bring.

For anyone having serious issues (which is about 70% of the PC users) I found that going into Task Manager - Processes and changing the priority for BO3 to 'high' (by default it's 'low' for some reason) improves performance a lot, and I have FPS capped at 58 as apparently having it just below your screen's refresh rate (for me 60) also helps with the lagging.

I'm fucking loving the gumballs



And because of some other gumballs didn't have to buy another single perk all game.