Pretty much Black ops 2 is unplayable 70% of the time at the moment on the PC version.
Are the ps3/360 versions suffering from lag? or is it just the PC?
I noticed a few times last night the lag was so bad it actually froze up for a 2-3 second period but like 3 times in a row. So it was lag lag freeze lag freeze then commence killing. Overall though it was clean considering it was Day 1. I did notice that 1 of my friends could not join us for some reason and at times the emblem menu would not load.