120hz / 60hz Duplicate/Mirror Problem

Associate
Joined
1 Jan 2008
Posts
128
Location
Cheddar, Somerset
I am trying to have my monitor at 120hz and the tv at 60hz whilst in duplicate/mirror mode.

As soon as I set duplicate mode in Desktop > "screen resolution" the maximum refresh for my benq xl2420t is 60hz.

I want to be able to game on the benq at 120hz whilst mirroring the image in 60hz on my tv.

Any suggestions?



PC SPECS:

GTX 980
benq xl2420 (DVI - D)
lg tv ( HDMI )

latest nvidia drivers
 
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