I thought I’d mention something that I didn’t see mentioned in here is the refresh rate:
I, unfortunately, am running a 43" 4k that only runs at 30HZ (60HZ at 1080) and in BMS it lists only 60HZ resolutions. Add “set g_bAllowAllRefreshRates 1” to the Falcon BMS.cfg and then you will see a lot more choices for resolutions.