Question Only 2 of 3 displays work at a time

[jeffnhardy]

Displays:
AOC 27B1HM - 1920x1080p 75Hz - Display Port
LG 27GN750 - 1920x1080 240Hz - Display Port
Samsung Odyssey G6 - 2560x1440 360Hz - Display Port
Samsung 65Q90C - 3840x2160 144Hz - HDMI

PC Config:
Ryzen 7 7800X3D
2x16GB Gskill Flare 6000Mhz
Asus TUF B650-E Wifi
RTX 3080 Galax SG (3 Display Port + 1 HDMI 2.1)
1TB WD Black SN770
H100i V2
Gigabyte 750W GP-P750GM Gold

I'm trying to setup a 3 display consisting in Samsung Odyssey G6 - 2560x1440 360Hz as the main display, 65Q90C as the secondary display and either AOC 27B1HM or LG 27GN750 as the last one.

Samsung Odyssey G6 + AOC 27B1HM + LG 27GN750 - Works Well
Samsung 65Q90C + AOC 27B1HM + LG 27GN750 - Works Well
Samsung Odyssey G6 + Samsung 65Q90C + AOC 27B1HM - No Image on the AOC 27B1HM
Samsung Odyssey G6 + Samsung 65Q90C + LG 27GN750 - No Image on the LG 27GN750

The only way I can get the Odyssey + 65Q90C to work with another display is using the TV's HDMI troubleshoot option that caps the TV a 2560x1440 60Hz and then a third monitor works fine.

I've tried 3 different Nvidia drivers, two different HDMI 2.1 cables (they're not the issue since the TV works fine at 4k 144Hz), rolled back windows updates, backing down to 60Hz on all displays and a few more things but no success yet.

Anyone has any idea?

 

[--SID--]

Enable the iGPU in the BIOS of the motherboard and connect the two 1080p monitors to the motherboard.

Know you have an explosive PSU

View: https://www.youtube.com/watch?v=hS0Mjw3BW94

 

[jeffnhardy]

Enable the iGPU in the BIOS of the motherboard and connect the two 1080p monitors to the motherboard.

Know you have an explosive PSU

View: https://www.youtube.com/watch?v=hS0Mjw3BW94

For some reason I did not thought about doing that 🤦‍♂️
Working perfectly and I'll also be replacing the psu ASAP, good info!
Thanks a lot @--SID--