Your stats are fine, all within specification and reveal no obvious issues.
Now Wi-Fi performance about the house is an entirely different issue to your basic connection with VM. Wi-Fi radio signals can be affected by so many things including thickness of walls, nearby electrical appliances interfering and most often, a neighbour's Wi-Fi setup interfering because you are on the same channel.
Try changing your Wi-Fi channel to see if this makes a difference ... video tutorial at the top of this forum page.
Thanks Dave, appreciate you looking at that for me. All the errors and warnings seemed a bit alarming. I had already used Wi-Fi analyser app to check on channels and change. I use both 2.4 and 5 ghz bands and must admit it is quite scary when you see just how many items that do in fact connect to my Wi-Fi. Xbox 360, Xbox one, a playbook, 2 tablets, 3 phones, 2 Chromecast, a hive heating thermostat, 2 smart light bulbs, a network storage drive and a smart watch. Had music playing from a tablet last night to a Chromecast and it dropped out regularly which is why I did some digging today. Will maybe try re positioning the hub. Thanks again for your help.