By the way..
MBP is connected with usb c cable to a LG 27’ 4k. Absolutely fine.
If the MBP is open and it is connected with the 4k monitor, navigation experience throug heavy vw files in Open GL are better on my imac 2017 with 8 gb gpu, but using only the 4k monitor it looks the same, for now.
If you switch to M1, absolutely ABSOLUTELY do not trasfer directly data from intel mac or using time machine. It’s a disaster: 8 hour on phone with apple and dropbox support, finally resolved ONLY with a new clean installation.
But yes, i think M1 is the way, quicker than we can imagine..
have a cadmouse and spacenavigator, both from 3d connexion, no issue for now