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aqwut
Journeyman III

Eyefinity crashes system when in full screen

Hi All,

I have been very frustrated that eyefinity crashes my system when switched to triple 4K monitor in portrait mode to full screen mode in any game.  The eyefinity resolution is 6480 x 3840 and does  work in windowed mode for the games I have tried.  Any time I switch to full screen mode, the system hangs instantly and a hard reboot is required.  I know it is not the OS or monitors.  It works fine in fullscreen mode with an old AMD RX 580 and nvidia RTX 2060.  Why on earth doesn't it work on full screen with a much faster Gigabyte RX 6700 XT Gaming OC?

I have 6 Asus MG28UQ monitors, but I am only using 3 to my computer.  I have tried swapping out monitors and it's not it.

System board is MSI MEG Z390 GODLIKE, Intel Core i9 9900K, 4x Corsair Dominator 3200mhz, 1x Samsung nvme 970 Pro 512GB, 4x raid 0 XPG SX8200 Pro 512GB (2TB total).

Please help.  thank you.  I have read and tried many things online without any luck.

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