I've had FTTPoD installed for a couple of months now and have an issue where my Single speed thread is about a 3rd of my multithread speed test.
I've had a ticket raised with Cerberus for a couple of weeks now but currently they can't pinpoint a reason after checking the circuit, resetting it and increasing the bandwidth available.
I've tested on multiple laptops both over my wired LAN via a router and also connected directly to the ONT. I've reset the network stacks on both laptops and checked that the network adaptor is set to 1Gbs
They have suggested an issue at my end and the next course would be an openreach visit but if nothing is found would be chargeable so I'm hoping there could be something I'm missing before going down that route.