@ahmdnazrafq 

Me:

I've tried various combinations. What works better is locking the band down to a single band if possible (5G). It's not perfect, but more consistent.  I found finding a good placement for the unit, then locking to this band is where I got to. Selected the ISP rather than auto, locking the cell wasn't so successful - so I've left that as the default. 
 

Re "use 4G" - whilst i am not against this, if I'd have wanted a 4G service I may have bought a different router. 
 

For now, my setup is working for me, I'll stick with it. 
 

Things I'd like:

- don't forget a device connection preference when the network changes, typically a network change maybe a momentary loss of a remote deco. The loss of preference and having to manually reinstate is a ball-ache. 
- sort the client list out in the app, always out of date. 
- wps for iot network please. 
- "smart devices" panel in app, needs improvement,  not all smart devices are TP-L, therefore other 3rd party devices aren't picked up. No way to add something like a tado rad thermostat.