27" LG Ultrafine 5k running at 60 Hz. The connection is Thunderbolt 3, direct to the 16" M1 16MB Pro, no dock. The monitor has a USB 3.1 hub built in and that

27" LG Ultrafine 5k running at 60 Hz. The connection is Thunderbolt 3, direct to the 16" M1 16MB Pro, no dock. The monitor has a USB 3.1 hub built in and that has also been well behaved. This is the latest rev of the LG Ultrafine, the 27MD5KL. It has been flawless. Their first couple of versions had some issues. See the following for more info on those versions: https://apple.stackexchange.com/questions/371124/difference-between-old-and-new-lg-ultrafine-5k4k-displays https://apple.stackexchange.com/questions/371124/difference-... I have also used this laptop with lots of generic HDMI displays plugged in directly to the HDMI port. No issues. I have had mixed success with no name USB-C to HDMI adaptors. Some of those have problems. I throw those away or send them back. I am using Bartender and BetterSnapTool. Nothing else third party that messes with windows or spaces. Hope it works out for you.