runawayprisoner wrote:Hmm... try going back to Internal Filters, uncheck MKV and MP4/MOV, then go and download Haali Matroska Splitter and install that instead, then see if the problem doesn't go away.
Did that and no change. So looked around the web a bit.
MPC-HC has an ant-tearing capability. Which supports the just use MPC-HC approach.
http://mpc-hc.sourceforge.net/AntiTearing.html
Looking further and taking the link to gaming on-board there was some suggestion to set the vertical sync to "Force On" in the NVIDIA control pannel (under manage 3d settings). I did this (finding that mine was set to force off) and now no tearing.
This also solved my tearing in Windows Media Player.
I changed the vsync option to "Use 3D application setting" and back to "Force Off" and still no tearing, so not sure what has changed. I left mine set at "Use 3D Application Setting".
I suspect I messed this up originally when setting the 3D to max performance in the control panel when trying to get games to run better.
There was also some talk on Nvidia forums of driver issues and people going to previous version to solve this but i did not investigate further.