Power settings are all ok (off or at max where it should be). Hardware acceleration that triggers in chrome is MAYBE the case, but how can I set windows to trigger GPU's full potential in console (DOS) window?
Other question is already posted: why it is still running fine even AFTER I close Chrome (after Cudaminer start)? That trigger then remains in "ON" state or what?...
My other rig with GTX 760 never does that (same nVidia driver, same Windows settings)?!
I assume this is related to the different performance levels of your Nvidia card. I got a similar issue, if a pool I'm mining for has overload, then the hashrate decreases and I get frame drops with animations in my Chrome browser because the GPU load is not high enough to switch to the next higher clock profile.
Guess this could be fixed using the tool
Nvidia Inspector, it comes together with a tool named "Multi Display Power Saver", which is made to prevent running the graphics card at higher profiles than necessary when using multiple displays and therefore save energy.
But there you can configure applications that always trigger the highest available clock profile for your GPU, so you could add your miner there and the GPU should always use the full clock when your miner is running.