Devices > Video Cards, Monitors, Televisions, and Projectors
Tweaking MadVR (video almost perfect)
Patu:
Thanks for all the replies guys.
--- Quote from: JimH on January 01, 2018, 03:40:42 pm ---So what is causing the spike?
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It's MC which spikes, Media Center 23.exe. MPC-HC doesn't cause any spikes. Something related to audio maybe? Though plain audio playback works just fine on MC. I use USB bridge between my PC and DAC (TeddyPardo U2S). First I thought it was the memory playback feature on JRCM, which I had originally turned on, and it helped a little when I disabled it but I still get dropped frames and spiking.
--- Quote from: Awesome Donkey on January 01, 2018, 04:01:21 pm ---High DPC latency, perhaps?
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This might have something to do with it since I have had some DPC latency issues in history. Haven't checked the latencies lately. But once again I don't understand why it's only MC which suffers. MPC-HC plays video just fine and for Audio I use Roon nowadays and no problems with that one either.
--- Quote from: stewart_pk on January 01, 2018, 06:44:27 pm ---Automatic display switching setting in JRiver is irrelevant to MadVR from memory; something I wish was more clearly explained/implemented.
You need to get MadVR to do auto switching with the appropriate settings; this may or may not help the problem but auto switching is a must for the highest quality playback.
I think the CPU spike might be unrelated to your issue. MadVR relies on your GPU considerably more than your CPU I believe, this is by design.
Microsoft has added a handy GPU usage meter in the Task Manager of Windows 10.
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Yeah I know I can do the automatic switching either by MC or MadVR. Both seem to work just fine. Automatic switching seems to do the trick and I don't get dropped frames on MC either. But once again, sorry for repeating myself, MPC-HC works smoothly (no dropped frames) with 60hz display and 24p movie.
This problem is not about MadVR, since it works perfectly smooth with MPC-HC. It has something to do with MC.
CPU spike most probably has everything to do with this since when the spike occurs, I lose frames. What I'm trying to find out is the reason for the spiking. I follow the performance with Process Explorer which is more advanced monitor than the basic task manager. GPU usage is steady while playing a movie, it's high but steady. No spiking on GPU.
https://docs.microsoft.com/en-us/sysinternals/downloads/process-explorer
It feels like MC is more sensitive to... something. But what?
While googling the problem yesterday evening, I found this post: https://forum.doom9.org/showthread.php?t=173571
I checked my system timer settings, just in case, and noticed that HPET was disabled in BIOS. Not sure if it should have any effect on Windows 10 but I turned it on. Now in the morning I tested with 1080p material and no dropped frames, at least for the ~10 minutes I've played it now.
Hendrik:
--- Quote from: stewart_pk on January 01, 2018, 06:44:27 pm ---Automatic display switching setting in JRiver is irrelevant to MadVR from memory; something I wish was more clearly explained/implemented.
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Thats wrong. MCs auto switching works perfectly fine with madVR (and in some cases even has advantages, as you can configure a wait to give your screen time to sync to the new rate).
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