I recently upgraded my Fibre broadband to GFast 160/30.
I have the equipment provided by Zen / Openreach - Fritz!Box 7530 Router and the MT992 modem.
Openreach did all of the necessary hardware installation and internet speeds are consistent.
However, there appears to be a bottleneck and my internet speed is limited to around 100Mbps. This is due purely to the Sync Rate, which over the last 8 days has ranged from around 90Mbps to a maximum of 101.787Mbps (according to the Line Rate Data).
Not only this, but my upstream has dropped dramatically from 20Mpbs on Superfast to around 7.5Mbps on GFast.
I phoned Zen Technical Support and they went through the basics (turn off / on router and modem, replace the splitter, replace the cable to the modem, adjust some setting on the router etc ...) but the sync rate remained pretty constant. He tested the line 6 times and sync rate ranged from 95 to 101 Mbps.
I did the quiet test on the houseline and there was no noise.
We both concluded that there must be a bottleneck somewhere that is restricting the sync rate. The technician believed it would be an Openreach issue and has booked an engineer appointment, however, if the issue is down to something basic that is my fault, I will be charged for the visit (some £200).
The quality of the speed is very good. Hooked up via the LAN, I'm getting around 92Mbps and via the WiFi, it's slightly less. I don't see what the issue could be on my end, but if I can find the fault and fix it, then I'd rather not fork out £200 for a wasted visit.
I only have two possibilities as to what the issue is:
1) One of the hardware equipment is causing the bottleneck. The modem and (apparently) master socket were replaced. This is the new Master Socket: https://www.run-it-direct.co.uk/bt-line-boxes-and-so...
2) There is an actual Openreach technical problem that is throttling the line.
Does anyone have any other suggestion that I can try cos I'm out of ideas.
Thank you (sorry for Wall of Text).
Edited by Lotak (Tue 19-Nov-19 11:43:08)