2015-07-22, 21:45
I realized that I never before tested using passthrough audio. So here you go:
I just re-tested using the same Kodi settings you posted above, except for rendering (DXVA-HD). Not tested with sync playback off or vsync off (useless settings).
Result: No issue. Delay stays the same, regardless whether using SW or DXVA decoding, audio passthrough (AC3) or decode (AAC) in Kodi 15.0 Isengard.
My hardware and OS setup for this box is completely different to yours, though (Win8.1x64, Intel G45 GPU using Win7 drivers, Denon AVR, Panasonic 100Hz TV 2013 model).
You might want to test with your 3770K's internal gfx to rule out an Nvidia issue.
I just re-tested using the same Kodi settings you posted above, except for rendering (DXVA-HD). Not tested with sync playback off or vsync off (useless settings).
Result: No issue. Delay stays the same, regardless whether using SW or DXVA decoding, audio passthrough (AC3) or decode (AAC) in Kodi 15.0 Isengard.
My hardware and OS setup for this box is completely different to yours, though (Win8.1x64, Intel G45 GPU using Win7 drivers, Denon AVR, Panasonic 100Hz TV 2013 model).
You might want to test with your 3770K's internal gfx to rule out an Nvidia issue.