Videoclock is one of the best features of MC but as you point out, does not work when Bitstreaming. I've several HTPC, one of which feeds a 7.2.4 setup and on this setup I bitstream to get ATMOS/DTS-X (the rest I use decoding and videoclock). I used to fine tune the timings in CRU to get a profile that would minimise (well eliminate) drops/repeats on this one HTPC for a normal runtime of a movie. It took hours to fine tune this and also get a signal that my JVC would accept.
Now the good news, is that I've upgraded all my HTPC to Windows 11. I don't know what changes they have made but frame drops/repeats from drifting clocks seems to have been addressed! Apart from the start up (and maybe one in the first minute), I now get excellent results without frame drops or repeats using the std nvidia drivers, and MC's auto frame rate switching. I've tested this on both a 1660Ti (this is one one driving the 7.2.4 setup) and a 3090 (my main PC but only 3.1) using UHD 23.976fps material. I'm running Dune UHD BD 23.796fps with ATMOS right now as a test, so far 0 dropped/repeated frames (after say 45min). Will repost the end results.
For me Win11 has been a great upgrade for HTPC users, as I find:
1: HDR ON all the time works well (it tonemaps SDR (including the desktop and apps) --> HDR) so none of that annoying switching between HDR/SDR modes, and SDR looks fine.
2: Sync of the GPU's frequency with the desired media frame rate is much better, leading to much fewer (if any) frame drops/repeats when bitstreaming.
Thank you so much jmone for your reply its much appreciated!
As Im a bit green on this side of things, may I ask for more details from you please....
Is the 1660Ti card better than the 1080Ti card?
Do you think I should move to the 1660Ti card if I want to have very few dropped frames with bitstreaming?
I have the JVC NX9 on a 145" curved Stewart STG4 microperf screen, dropped frames when bitstreaming is horrid so I can only use JR LPCM with the JR video clock which is AMAZING! I use madvr HDR to SDR for all my 4K HDR films and it works a treat....
Do you need Windows 11 with the 1660Ti card to stop the dropped frames when bitstreaming?
My PC guy just told me windows 11 is SHOCKING! He says its loaded with ads and pop-ups and is afraid they may appear in the middle of a movie which would be horrid!if I just moved to Windows 11 and stayed with the 1080Ti card would the frame dropes on bitstreaming go away?
Ive had a proper Atmos setup ever since it first came out but never ever used it as I cant live with the dropped frames!
You say sync times are faster but the JVC is slow anyway so surely this wouldnt speed up going from say a 60 film to a 24fps film?
Thank you so much for your help....Looks like I need some further investigating here....
I also years ago tried to fine tune the timings but it was an impossible journey Im sad to say