I have a problem using MPC-HC+madVR (no other codecs installed). I'm using madVR's frequency change and it's working nicely except for 24 fps movies. So if I'm watching a 23,976 fps or 25 fps movies, madVR switches my LCD TV to 23,976 hz or 50 hz. No problems, no droped frames, jitter-free. But when I start a 24 fps movie, the desktop switches to 23,976 hz and here comes jitter. I noticed one more thing, if I enable "D3D fullscreen" in MPC-HC's "Output", the desktop switches to 25 hz (and here comes jitter again). So "D3D fullscreen" on->25hz, off->23,976 hz.
Here is my madVR display mode settings:
Relevant specs: LCD LG->HDMI->Radeon 4850 + Catalyst 11.12 on Win 8 RTM
Any suggestions? Thank you for your help