Custom Resolution Utility (CRU)

[InSight]

Hi.

My name is Ingo.

I wanted to setup a TripleScreen with two different Brand of Monitors.
Two Monitor are same Brand Idek Iiyama PL2760Q. Left and Right Monitor.
The other Monitor is AOC AGON AG271QG. Middle Monitor.

All monitors are 1440p, 27" and 144Hz.
I thought this is enough to setup NVIDIA Surround with all three screens.
But is does not work in 144Hz only in 60Hz and I dont know why.
Even if I turn of G-Sync for the AOC and setup same Resolution with 144Hz for all three monitors.

Attached is any overview created with the CRU Tool of my monitors.
Can you tell me by this why I cant activate Nvidia Surround in 144Hzu with all three screens?
Can you maybe also tell what I can do with CRU actually make this work?

Thanks for your support