Anyone else finding this router problematic? Couple of thinks-it seems to hugely fluctuate in speeds from 65mbps to 450mbps (my full fibre is guaranteed at 450mbps). I've tried the incoming connection with my ISP's router & that's stable. I've paired the Air R5 with an extender (TP-Link AX1800) & that's not great. I live in a pretty small house so it's not traveling huge distances-maybe 6m from router to extender. Set-up's easy enough via the app but the router itself doesn't give a decent solid connection. It also gets super hot that's probably caused by the design secured directly to a wall. Be interested to know if anyone else had had any issues???? Are the Deco routers better?