knypol wrote:I have two displays connected to my PC with gtx 1070: PG258q and Benq projector . Recently i have noticed that when im watching Netflix (in app from windows store or in browser) or Youtube movies everything is very choppy. I was trying to figure out what was causing that problem. I reinstalled Nvidia drivers, even reinstalled windows 10, unplugged projector - only monitor was connected, disabled gsync. Problem wasnt solved. Then i decided to change refresh rate of my pg258q from 240 to 200 and then magically all problems are gone. Setting anything below 240Hz makes all videos very smooth. I dont believe that 1070 cant handle 240Hz. Especially that all games are perfectly smooth on 240Hz. Even movies played with Home Media Player are super smooth. Any1 got idea why is it happening? Tried to make custom resolution (in cru) 235Hz but i always get out of sync.
Two possible known problems causes this:
1. Simultaneously different refresh rates due to multimonitor
-- Try making the 240Hz a primary.
-- Try temporarily disabling the projector and see if frameskipping disappears.
-- If this solves the problem, but you need multimonitor profiles, you can use software such as DisplayFusion to have one-hotkey profiles to switch multimonitor configs (or even two separate single-monitor profiles; turning the other monitor off).
2. or 240Hz Refresh Cycle Skipping found in several 240Hz monitors.
We've had reports of frame skipping (lost refresh cycles) occasionally happening on several brands of 240Hz monitors, mainly the earlier firmwares of Viewsonic 240Hz and AOC 240Hz. Fortunately, all of them have been fixable.
To help troubleshoot, could you go to
http://www.testufo.com/frameskipping and take a picture with your smartphone (or other camera) -- adjust the brightness of your display downwards a lot, to force the camera to take a long exposure, preferably capturing at least 50 or more squares (the frame skip ratio tended to be almost exactly 1 in 36 squares or 1 in 40 squares). Make sure you close all windows and browser tabs; sometimes browsers have difficulty with 240fps@240Hz.
Many manufacturers did not even notice, but we (at BlurBusters) did, and ViewSonic very quickly fixed their firmwares thanks to our reports (kudos for that).
However, new firmware is optional. Users can just fix their existing ViewSonic/AOC FreeSync 240Hz monitors via using ToastyX CRU. Vertical Total of 1160 or 1159 (aka VT1160 or VT1159). Some variations can be experimented, VT1149, VT1150, VT1151 (or even going up to VT1160) in Custom Resolution Utility. Basically, VT1140 created frame skipping but VT1150 made frame skipping disappear on the Viewsonic XG2530 --
see Viewsonic VT1150 instructions here -- the XG2530 works best with VT1150 but subsequently we found the AOC AG251FZ (FreeSync version)
VT1149 works best to avoid frame skipping (stutters at 240Hz).
This might not be your monitor's issue, but it only occured when running in non-VRR mode (GSYNC turned off or FreeSync turned off). As soon as VRR was enabled, 240Hz had no frame skipping.