Slow down.

Just wondering if there is any reason why my game is deteriorating?

The game did run fine in 3D and every now and again it would slow down a bit and get laggy. Just lately, it has gone from slowing down occasionally to pretty much constantly. I've had to turn off the 3D match engine. Only had problems since the 10.2 patch and for some reason it seems to be slowly getting worse.

Before you ask, it isn't my rig, as i said before i never had anything like this before 10.2.