Update on this. I'm dealing directly with the Executive Customer Resolution Team. I've now had three Openreach engineers look at the problem and each say there is no issue with the line or the line speed. The first one replaced the mastersocket for one with a combined filter, reset my smart hub and told me everything should be fine. It had slowed by the time he'd exited the street. The second engineer couldn't find anything at all, reset the smart hub and ordered me a replacement but didn't tell me. The third engineer checked the master socket and said there was a loose connection so that would be the issue. This "fix" lasted the longest, for about 48 hours before the poor upload speed returned.
I've been keeping a log of my ping, download and upload speeds each day and have noted the upload drops off significantly around lunchtime each day.
13/12/2020
10:41am - Ping 43, d/l 22.45, u/l 1.22 wireless and Ping 54, d/l 21.86, u/l 0.54 Wired
1:44pm - Ping 43, d/l 21.04, u/0.39 wireless and Ping 42, d/l 30.23, u/l 0.66 Wired
6:32pm - Ping 42, d/l 21.17, u/l 0.00 wireless
18/12/2020 Engineer found loose connections in master socket
2:20pm - Ping 27, d/l 34.25, u/l 3.57 wireless
8:30pm - Ping 28, d/l 34.75, u/l 3.25 wireless
21/12/2020
1:30pm - Ping 28, d/l 32.89, u/l 0.68 wireless
26/12/2020
10:45am - Ping 27, d/l 32.27, u/l 1.12 wireless and Ping 28, d/l 34.29, u/l 1.20 wired
3:57pm - Ping 27, d/l 33.65, u/l 0.67 wireless
8:24pm - Ping 28, d/l 31.79, u/l 0.56 wireless
29/12/2020
10:54am - Ping 27, d/l 29.57, u/l 0.48 wireless
5:30pm - Ping 15, d/l 32.60, u/l 0.52 wireless
30/12/2020
10:34am - Ping 27, d/l 35.51, u/l 1.77 wireless
11:56am - Ping 26, d/l 36.98, u/l 2.75 wireless
3:35pm - Ping 27, d/l 31.96, u/l 0.81 wireless
7:22pm - Ping 27, d/l 30.68, u/l 0.64 wireless
31/12/2020
10:02am - Ping 27, d/l 34.08, u/l 1.21 wireless
Shortly after this test I reinstalled my mesh network to see if this made any difference to afternoon speeds.
1:23pm - Ping 30, d/l 31.78, u/l 2.04 wireless
4.25pm - Ping 29, d/l 31.26, u/l 0.48 wireless
8.25pm - Ping 31, d/l 29.87, u/l 0.07 wireless
01/01/2021
I removed my mesh network
9:20am - Ping 27, d/l 25.24, u/l 0.01 wireless
10:33am - Ping 27, d/l 23.41, u/l 0.03 wireless
11:24am - Ping 27, d/l 28.22, u/l 1.00 wireless
2:32pm - Ping 27, d/l 28.46, u/l 0.98 wireless
7:47pm - Ping 27, d/l 21.36, u/l 1.17 wireless
02/01/2021
11:17am - Ping 27, d/l 29.22, u/l 1.97 wireless
3:07pm - Ping 26, d/l 29.10, u/l 0.34 wireless
8:18pm - router lost connection (not reset)
9:16pm - Ping 27, d/l 27.52, u/l 0.78 wireless
