I am running on windows 7 64bit with a NVIDIA Quadro K2200.
When i run ethminer.exe -G -M i get mean: 7536153 H/s
But when try to mine using QTminer or Etherminer get only CPU rates.
The GPU shows fill utilisation but the has rates are 1/10 what it should be
See attached screen shots.
Any suggestion why this is?

Benchmark

Solo mining

Pool QT miner

Pool QT miner
Comments
Version: 362.13
With Cuda_7.5.18_windows.
I also tried CUDA 6.5 and 7.5 from Genoil's ethminer 0.9.41-genoil-1.0.7
Then I get the Nvida driver crashing if I run ethminer -U or -G
The benchmarks shows 10% improvements with Genoil's
Must be some driver thing.
Since you have a Quadro, you could try running it in TCC mode. It may improve things. This would require to hook up your display to another GPU. If you have an Intel iGPU, this would be fine.
I am googling but so far i found out that TCC stans for Tesla Computer Cluster. Yet I can't seem to find out how to change mode of the the Quadros to TCC. I will keep on googling.
SET PATH=%PATH%;"C:\Program Files\NVIDIA Corporation\NVSMI
nvidia-smi -dm 1 -i 0
nvidia-smi -dm 1 -i 1
nvidia-smi -dm 1 -i 2
But I see I have left a screen attached so will need to go to the rig later and remove it before I can see if it makes any difference