FPS problem with other programs running

[undertheinfluence]

My problem is that whenever I am running a program that runs constantly/affiliates with altitude while running, I have major fps problems. For example, mumble drops my altitude fps to around 4 (starts when I join a specific chat in the server) and the same happens when I run a program such as bandicam. I have tested out both of these applications on separate games and instances and everything runs perfectly. I'm not really sure why this would happen with only altitude but thanks in advance for any help!

[yankinlk]

Does mumble use overlay? Turn it off if it does.

What graphics driver are you using? I gad a similar issue with ati rivers a while back and my old 6870. I was able to roll back to an older version to fix the issue but eventually got annoyed and upgraded the gpu.