It did not do this in the demo but it does it almost constantly in the full version. At least for me.
 
Every time you cross a bridge, or get to the other side of a large open area, the music craps out and the game just stops and goes for 3-4 seconds at a time. It's even worse if you change your mind and decide to turn around - it has another seizure.
 
Am I the only one experiencing this? I am playing local co-op with a Gold and a Silver gamertag.

I haven't noticed this issue. I've played the first two levels alone and the first level co-op. The only difference is I never played it as a demo, I just downloaded the full game straight away. I don't know why that would cause your issue though. Maybe try clearing your cache and see if that helps.

I have not had this issue either.  I played the demo and unlocked it later.  I am on the penultimate level in single player and have played the first level co-op (which I actually controlled both players, haha).  I agree that you should try clearing your cache.  You might try deleting some stuff you don't need too.  IIRC this is a 2 GB download, so I could see it possibly having trouble if your hard drive is near full capacity.  It is weird though that you did not have this problem in the demo.
 
Just out of curiosity, what size hard drive do you have and how full is it?

Have not experienced this at all. Been playing co-op and probably have put in a good 5ish hours so far. Have had a couple different leveling ending weird bugs (progress saved so it didn't really matter) but nothing that's constant like that.
 
Hopefully for your sake, that gets patched soon!

120gb, about half full.
 
I will try it again later in the week when I have a partner again, maybe it was a fluke. It persisted throughout our session though.

Well it's a co-op game that they could not get the co-op to work in.
I wonder why it's buggy.

" Well it's a co-op game that they could not get the co-op to work in. I wonder why it's buggy. "

" @trophyhunter said:

" Well it's a co-op game that they could not get the co-op to work in. I wonder why it's buggy. "

The way I'm to understand it is that the online co-op is being patched in the same day that the PSN and Steam versions come out, which leads me to believe that they are trying to run everything on one specific setup rather than three different online components in order to reduce overall production cost.  It's a smart move.  Why put up a shitload of server farms for three different versions if you can build one basic online netcode for all three versions, then run them on something relatively smaller?  I mean, that's all my assumption.  I don't know the ins and outs of game development, but that seems like it's what they are doing.  Therefore, it's less about "not working" and more about "we're aware that we're a downloadable game and we want this to be both a good experience for the gamers as well as profitable for us to make more of them". "

That sounds like the issue I have with my flash drive. I have 2 360's, so I put all my save games on a flash drive. Every time the game auto-saves, it stutters and pauses for a few seconds, and the issue disappeared by saving onto the harddrive.