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

[あごに]

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)

[TehSpoopyKitteh]

Mirroring 4K is probably what's doing it.

[あごに]

but whats the point?
the native image of the TV is 4k 60hz, ima downscale it to 2.5k, and then the tv stuck at 30hz/fps
and in my display setting both of the displays is set to 144hz, because the TV is "the slave" of my main screen.

[Bad 💀 Motha]

If you're a streamer, then you should have 2x PCs.
Don't run 4x screens like that off one PC.
Not unless you have more than one GPU.
Don't mirror anything, run each Display with it's own image.

[あごに]

Ignore the "stream" my problem its not that, my problem is with the 30hz of my 4k tv when i mirror my main display.
I do this for see movies, or sometimes play coop local, or even my girlfriend likes to watch me playing in the bed.

[Bad 💀 Motha]

Probably because you're trying to Mirror a Display that is using a Refresh Rate the 4K TV can't support.

Try first switching the Monitor to 2160p @ 60Hz
Then toggle the Mirror.

[あごに]

I will try, thanks

[Bad 💀 Motha]

Yes, you can allow 2160p on your 1080p or higher Display but enabling the Res via NVIDIA's DSR options in NVIDIA Control Panel. Once applied it will be a Screen Res option in Windows normally.

Just be mindful that added res' via DSR can be buggy in some Games.