Dynamic Refresh Rate issue, Windows 10 anniversary update 1607 MP 1.15 (1 Viewer)

[tomfrogger]

I have a peculiar issue with the wrong refresh rate being used by the graphics driver or mp and i'm not sure what the cause or solution is yet. I wondered if anyone else had seen this or could help.

When starting a new show or film mp will start playing and the video is on occasion randomly jerky with a very low refresh rate. If you press ! to see the on screen measured refresh rate, it is well below what it should be.

The EVR.log seems to capture this but i dont know where it is coming from.

[2016-09-26 14:24:11,552] [14a798a8] [1164] - Display (from windows): 1920 x 1080 @ 23.970000 Hz | Measured refresh rate: 11.985351 Hz
[2016-09-26 14:24:11,552] [14a798a8] [1164] - Max total scanline: 2248, Max visible scanline: 1079, Min visible scanline: 2
[2016-09-26 14:24:11,552] [14a798a8] [1164] - Vsync correction : rasterLimitHigh: 540, rasterLimitLow: 136, rasterTargetPosn: 136

I have the latest nvidia driver and i also replaced the mediainfo.dll for the latest 32bit version from the mediainfo site in case it was having difficulty reading the info.

Recent changes to the system that made me notice this happening was the windows 10 anniverssary update 1607.

I have attached my logs and would really appreciate it if someone could take a look to see if I've missed something obvious.

 

[tomfrogger]

Hi, I traced this to the dr hdmi dongle I use to keep the pc happy with hdcp.

It got knocked or changed settings after a powercut so it was no longer reporting that the tv was 1080p/24 capable when it is.

Putting it back to the right setting and rebooting the pc so the graphics card could get all the available modes seems to have sorted it.