Please excuse my complete lack of any sort of knowledge when it comes to anything remotely technical!

Always been a virgin media customer and always had some spots in the house that struggled with WiFi. Worked but dropped out and lagged on games, etc.  Having 3 tweens at home for 10 weeks coupled with a new garage to bedroom conversion, has highlighted how bad the problem is.  My teenager that moved into the garage, can't load anything on his smart TV at all and his gaming pc was slow.

I literally done the out the box set up for the deco m5 last night connected to my virgin hub 3.0

I've got the main unit plugged into the hub, one in the garage conversion and 1 on the landing upstairs (to serve 3 bedrooms (standard semi)

Results have been mixed and I'm sure I need to tweak something but have no clue what!

Garage bedroom- PC noticebally quicker, TV on the wall still can't load netflix

2 smaller bedrooms Upstairs happily running Netflix and YouTube.  Main bedroom, brand new smart tv timing out when trying to connect to new network.

Just checked speeds using the deco app and download is 84.7 and upload is 34. Currently just got my phone and 2 TV's running.   Noticed that both the hallway and garage units have 2 signal bars. 

Ive Googled the hell out of optimal set up for these things and quite honestly, don't have a clue what most of the terminology means!