Rather than a question: This may be of help
After a morning of confusion with my GPU, I have a tip to share that isn't applicable to all but may help many get the most out of their system.
I know I am not alone in being puzzled by seemingly random performance dips and unexpectedly low fps for a given system. I am running a quadro k2000m and have been getting as little as 10fps with 4 x 720p layers. With all hardware configured, correct codecs and so forth, something there just ain't right.
After monitoring my GPU, I found that it was underclocking itself from 745mhz to 135mhz. This is a power saving function built into the nvidia architecture. The power saver is only meant to function when there is a small load on the GPU, however (to my surprise) it appears to spontaneously happen even when Arena is open and sending bundles of work to the graphics processor...
Solution:
Step 1: Nvidia control panel settings:
Manage 3D settings > Global > Power management mode > Prefer max performance
However, this alone, will not solve the above problem.
Step 2: Download GPU-Z.0.4.9:
Later versions of GPU-Z may not work for this trick!
Also download another program that will allow you to monitor the core clock speed of the gpu in tandem with GPU-Z. For example:
- HWiNFO64 or
- nvidiaInspector
When Version 0.4.9 of GPU-Z is running it will force the GPU out of power saver mode and the core clock speed will go to its maximum. (Even with no load)
From now on, I run GPU-Z 0.4.9 in the background, even if resolume is performing without it. This is because even when resolume is performing well the GPU may randomly kick into power saver (even under the load of resolume!)
Please note: GPU-Z 0.4.9 sometimes doesn't run and crashes on my system (the latest version doesn't do this). However even with the crash it still has the desired effect, I just leave the error window in the background and monitor my core clock speeds on HWiNFO64.
I hope that helps someone out there!
I'm sure this isn't an isolated problem.
Blessings