I have a gbit cablecom connection and velop manages almost 300 mbit in parallel via wifi to three receivers. i only have a cable connection in the basement where there is an access point as an extension of the mesh network which networks the ps4. of course i only have the ps4 wifi connection that i can test and there the results are also around 300 mbit. unfortunately i have never tested direct cable.
from a mu-mimo point of view, however, i can say that the part is convincing.
BUT... i have to restart the network every 1-2 weeks. it could very well be due to one of the 50 or so devices i have networked, but i can't say for sure.