Optiplex 7010 UHD 770 2560×1080

Problem:
Optiplex 7010 Windows 10 Intel UHD Graphics 770 does not support Ultrawide resolution 2560×1080.

Solution:
Boot (once) Windows 11 (ToGo) and install UHD Graphics 770. Make sure resolutions is Ok.
Then boot to Windows 10 and Ultrawide resolution 2560×1080 is available.