FritzDitz

I would like to confirm that all poly sinc filters are not stuttering while upsampling a dff file to DSD128 with 3.12, CUDA offload and Pipeline SDM enabled. All poly sinc -2s, minringFIR and closed form filters are also not stuttering while upsampling n44 and n 48 PCM to DSD128, CUDA offload and Pipeline SDM enabled. Just to reiterate - there is no stuttering with any filter option and PCM or dff upsampling to DSD128 when CUDA offload and Pipeline SDM are disabled. Win 10 x64, i7-6700K, Quadro K2000.

Yes, Pipeline SDM is also enabled. Stutter with poly sinc's at dsd 128 dissapears when CUDA and Pipeline SDM are off. Can't test dsd 256 as my DAC does not support that rate.

In my case poly sinc filters stutter in combination of CUDA offload enabled and DSD 128 output selected. No problem with dsd 64 output though. It's HQP 3.12 on win 10, i7 6700K CPU and Nvidia Quadro K2000 with latest drivers.

Finally noticed someone talking about the same issue as I have since introduction of HQP 3.8.0. Please confirm that you are using win 10 (I suspect that is the reason behind that issue). I have no problems with all previous HQP versions on win 10. I informed Miska about that, but he is still using win 8.1.