Mirror my monitor imagem in my 4k tv, and get stuck at 30 fps...

[gabriel.c.kohl]

Hello...

I have 4 display total, 2 1080p to help me in my streams, my main monitor its a predator 2.5k 144hz with G-sync and I got a new LG 4k tv.

Now my problem...
when i was using my old tv, one 1080p 42pol panasonic, I use to mirror the image of my main monitor(the predator 2.5k 144hz) in my 1080p TV, use to work well, I need to upscale the tv to 2.5k, but no worries to that, the TV runs on 60hz and my main display at 144hz no problem...
now in my new 4k tv, when i mirror the imagem my tv runs at 2.5k because i want do have that resolution as defalt, BUUUT... the TV set to 30fps only (sometimes get 32fps idk why)
but my main display keeps at 144hz normal, but only in games full screen, the windows itself its only 30 fps, if I play a game in borderless the game runs at 30~32 fps.
Strange...

and if i set my TV as a extra display, not a mirror display, the TV runs easy at 4k 60 fps with no problem, the cap at 30 only appears when i set to a mirror image, i dont know what can i do to fix that '-'

Some hints?

(sorry bad english)

 

[rustigsmed]

see response in this thread

http://www.tomshardware.com/forum/id-3706400/locks-30hz-specific-games.html