I'm the same with the cube. 90 hardwired (limit if router) and 425 on wifi
I have gigabit ethernet around the house. Obviously the Cubes 100mb port cannot make use of it.
For streaming this is fine and the most reliable connection.
If you download a lot or run run a server/NAS, then wi-fi would be better.
As mentioned, it is poor my Cube 3 only has 100mb ethernet. But it is wi-fi 6, so at least you have a decent option.
My Mesh is wi-fi 6, so i could connect that way, but i only stream from it.
I think they held back, so the Cube 4 has gigabit ethernet as a reason to upgrade!