Good afternoon,
I bought my first desktop in 2015. It was a 4th gen i5, a 980Ti, and a Gigabyte motherboard. I have 5 monitors. (https://i.imgur.com/RrPQLmM.jpg). I connected monitors 4 to the 980Ti, and the last (pictured above the three) to the motherboard. I got no crashes and the setup worked great for 4 years.
I recently upgraded it this year to a 9700K, kept the 980Ti and an MSI Z390 Gaming Edge AC motherboard. However, keeping the 5th monitor connected causes my system to be unstable and will freeze periodically. If I disable the 5th monitor in the BIOS, the problems disappear. Does anyone know what the problem could be? I have IGD Multi-Monitor enabled in the BIOS and the latest Intel and Nvidia drivers.
EDIT 12/28:
It was windows night light causing the crashing...