Set up my router on PPPoE and bypassed having the bt router plugged in completely and it was automatically set to dial on demand, so i tried switching it to always on, but if i do this about an hour later the internet cuts off on the router for about a minute and then when it comes back on we have internet but now at 1/10th of the speed, 930mbps down to 93mbps, always guaranteed 1/10 exactly, have no idea why but it has done it 3 times now without fail by changing from dial on demand to always on.
I since looked at the set up and realised i had the tp link ethernet switch not set to loop prevention, could this have caused the drop in connection and the speed dropping to exactly 1/10 of the speed when it reconnected ?, i have done away with the tp ethernet switch as well now by the way since i no longer need that as the netgear xr500 is just feet away from my pc's.