Resetting the monitor to factory settings as advised yesterday and now the monitor seems to be opening at top resolution first time as required. 
I have a Dell XPS 15 with a  P2422H Monitor attached via a Dell DA310 7-in1 USB-C Multiport Adapter. Every time I turn on the P2422H, I get an unusable low resolution? Every time I have to turn it off and then turn it on again I get the proper 1920x1080 60HZ resolution. In Windows 11 settings the resolution is set correctly.    Could someone please advise how to get it to full resolution the first time I turn it on each day?
XPS 15, DA310, P2422H, resolution issue