[torcar]

Thanks for good feedback

I've had a 225ms delay in advancedsetting for 24p material, but as you mention... the delay is changing over time.

I've found a setup that works almost perfect now without advancedsettings tweaking... but it's a workaround, not a fix. And it destroys 50/60hz playback.
In my case that's better since about 99% of everything I view is 24p material.

I use the following settings if I remember correctly:
Adjust display refresh rate to match playback: Enable
Sync Playback to Display: Enable (Delay: 2,5 sec)
A/V Sync method: Audio Clock
Vertical sync = Off
Windowed: Enable
Wasapi passthrough for all sources. (Makes no difference to use directsound)
AERO disabled.

I takes about 5-10 sec for the audio to sync in, but after that it stays on perfect sync.

I've tested many many combinations of settings but these are the only settings that actually fixes the problem. Why? I have no idea But I'm sure you have