[bystander1]

Originally Posted by clsid

That driver is 6 months old. Latest one is from two weeks ago:
https://downloadcenter.intel.com/dow...10-DCH-Drivers

Also check the Windows 10 display settings to see if you can change it to 8-bit bit depth.

My drivers are provided by Dell, Dell's website indicates my current Intel Iris Xe driver (version 27.20.100.8853) as the latest suitable one for my laptop.

As for bit depth, it is 6-bit. I searched how to change it, it is said I should change adapter mode to 32-bit, but my adapter mode is already 1920*1080, True color (32 bit), 60 Hz.