Try this: edit your /etc/X11/xorg.conf
In Section "Device", add:
Option "DynamicTwinView" "False"
Option "TripleBuffer" "True"
So it will look like this:
Restart xorg or reboot, and see what happens.
In Section "Device", add:
Option "DynamicTwinView" "False"
Option "TripleBuffer" "True"
So it will look like this:
Section "Device"
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 550 Ti"
Option "DPI" "200 x 200"
Option "DynamicTwinView" "False"
Option "TripleBuffer" "True"
EndSection
Identifier "Device0"
Driver "nvidia"
VendorName "NVIDIA Corporation"
BoardName "GeForce GTX 550 Ti"
Option "DPI" "200 x 200"
Option "DynamicTwinView" "False"
Option "TripleBuffer" "True"
EndSection
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