I usually play about 10-20 matches before i get a little tired, especially if i go 48-6 in a match. I dont want my good streak to end next game and I fall off so I just stop playing and just chill out for the rest of the day.
I don't think "bored" is the word I'd use, but probably like half an hour until I switch to something else. BO2 is a filler game at this point, for me at least. That's what usually happens to me when I play CoD games, yet I buy most installments. Baaaaaaaa
Tried this weekend after a three week hiatus and got into a match of Dom to find most of my team and the enemy team were QSers. Didnt finish the game took out disc and probably wont be playing again for another three weeks.
One among the Fence Currently Playing: Dragons Dogma, Batman AC & NBA 2k13