hey, even if i don't have a 9800gx2, i'm aware of this issue.Originally Posted by slugzkea
open your nvidia cp and head to the 3d settings. make sure "multi-display/mixed-gpu acceleration" is set to "single display performance mode".
for quite some time this option defaults to "multi display mode", which causes this huge performance hit.
given the fact that you play games mostly only on one monitor at once one doesn't need multi display 3d acceleration.
with single display acceleration you'll only enounter problems, if you want to use a 3d application on both monitors at once, as in single display mode only the primary monitor will have gpu acceleration.
nonetheless, i'm using 2 monitors myself and have no issues with single display mode.
dunno if it was mentioned before in this thread. just wanted to spread the word in the hope it might be helpful for someone
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