Home Hub 5A struggling to cope with multiple WiFi connections
I have a BT Home Hub 5A on an 80/20 Infinity package. Line is generally rock solid, max data rates are 27689 / 126371. But recently I've been rolling out multiple WiFi devices in the house: four Echo Dots, smart TV, 2x Fire TV sticks, HUE lightbulbs, Sky Q + mini, plus there's two iPhones, two iPads, etc. And I think my HH5 is unable to cope with so many WiFi connections, even though I've split the 2.4/5Ghz frequencies and tried to balance the load between the two.
Basically, the devices will randomly lose connectivity and appear "dead". Even the hard-wired PCs sometimes struggle to maintain a constant internet stream. Right now I have 15 devices connected via WiFi - obviously they're not all using bandwidth at the same time, but they show up on the HH5 router page as being connected.
I've even tried a replacement HH5 and it's no different - I'm having exactly the same problems. I'm guessing 15 connections (with more to come) is way too much for a HH5? Am I best off buying a third-party VDSL router?