I assume you've already tested with a PC directly connected to the ONT to rule out router issues? If not, that should be your first port of call.
Yes; I did try plugging my PC directly into the ONT and it made absolutely no difference as the speeds were still low and they were still all over the place. - (My laptop is up to date everything and I use CAT6A cables).
After my first post on this, I did record a new high speed of 871 Mbps, (just before 8:00PM this evening), so my line and equipment does seem capable of getting near to 900 Mbps. - However, an hour later, the next speed test was only 88 Mbps so the speed of 871 Mbps seems to have been a fluke.
It does seem to be contention but I chose Zen because Zen has overcapacity and my FTTC Zen line never has a whiff of contention so I don't know where the problem is but it's not good.
The Zen Website refers to an average speed of 900 Mbps: which indicates that it could sometimes exceed 900 Mbps and sometime be a bit below 900 Mbps but this is [censored] especially since the browsing is slow.
The ping on the speed tests is usually recorded as being 12 and the jitter is usually recorded as 1.
The 64,000 Dollar Question is: does anyone with residential Zen FTTP consistently get speeds around 900 Mbps and a fast snappy connection ?
Do residential customers from other FTTP providers consistently get speeds around 900 Mbps and a fast snappy connection ?