I used to do that on my desktop. Unfortunately now that I am moving I can only play on my laptop, which is a lot less powerful. For many games I need to play on 720p instead of the native 1080p in order to maintain 60 fps
Yeah it seems like it only happened in BLOPS II (didn't try it a second time though). I played some Jazzpunk today and had no issues controlling volume through the Omni in-game. Weird.
Do you tweak in game settings? There are a few settings that can make FPS nosedive.
I honestly don't know why people just go straight for Ultra settings and get pissed off when it doesn't hit FPS. They can seriously just go to Custom, max out everything except a few things, and be the equivalent of Ultra without some of the things that hurt FPS by a ton. On my Alienware laptop, I found that shadow quality, high anti-aliasing, are two of the most taxing settings.
If I lower shadow quality to normal instead of max on some games, I sometimes gain around 20 FPS. And the difference between max and normal is that shadows may look a little less sharper. It isn't something you almost ever notice, and shadows rarely ever look super sharp in real life either unless you have a bright light source next to the object.
As for AA, when playing in 1080p, the difference between 2x and 4x is so miniscule, it really isn't worth the FPS penalty, and the difference between 4x and 8x are...well, I can't see it unless I'm straining my eyes in certain places. For me, this setting depends on the game. Some games I can run 8x MSAA and it still stays at 60fps, but for the most part, I leave it at FXAA (which has almost no performance lost whatsoever compared to no AA at all), and if the game can handle it, I'll put it at 2x MSAA.
People need to understand that Ultra maxes out some of these settings that give you ver, very little actual benefit, and it's much more worthwhile to lower them to normal levels as you can't see the benefit anyways.
Also, make sure to have an FPS counter like FRAPS or DXtory to test your games and see which settings impact FPS the most.
Other settings that I've noticed harm my fps:
Ambient Occlusion (I can still run this on normal most of the time for 60fps). This setting is also one of those that can impact performance bya lot, but gain very little going from a normal to Ultra. Some games run it better than others. It is worth having on, but just test to see if your PC can handle it well enough MAX, or lower it to around normal.
Tessellation: This is single-handedly one of the most demanding, and WORTH having on. Always, always try having this maxed, and tweak everything else. If all else fails, turning this off will make your FPS skyrocket but you lose the next gen looking textures. I did turn it off on Sniper 2: Ghost Warrior and Batman: Arkham City, as those game was super demanding on my PC (I could never reach 60fps until I turned this off).
Unreal Engine and my laptop aren't the best of friends.