I was having loads of problems. Speeds were pretty good via laptop connected to the hub via ethernet cable. Make sure to turn Wifi off on the laptop when you connect to the router. Try running speed tests from the laptop I used speedtest.net
Not sure new router will fix your problems.
I ended up buying the TP Link Deco M4 for £100 and switched the VM router into modem mode. Thigs are much better. I was getting about 30 Mbps in the room furtherest away from the router, now I get 70+ Mbps in that room.