Thanks for the response. This is the graph after a couple of hours plugged into the router:

The connection hasn't be been quite as bad as usual this morning, although there has certainly still been freezing on Zoom/Slack, It's hard to tell if it gets worse in the afternoon/evening when I do most of my calls.
Here is the information from the status page as requested:
Downstream bonded channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
1 | 298750000 | 2.5 | 38 | 256 qam | 21 |
2 | 138750000 | 2.4 | 37 | 256 qam | 1 |
3 | 146750000 | 2 | 37 | 256 qam | 2 |
4 | 154750000 | 1.9 | 37 | 256 qam | 3 |
5 | 162750000 | 1.5 | 37 | 256 qam | 4 |
6 | 170750000 | 1.7 | 37 | 256 qam | 5 |
7 | 178750000 | 1.5 | 37 | 256 qam | 6 |
8 | 186750000 | 1.5 | 37 | 256 qam | 7 |
9 | 194750000 | 1.2 | 37 | 256 qam | 8 |
10 | 202750000 | 1 | 37 | 256 qam | 9 |
11 | 210750000 | 0.5 | 37 | 256 qam | 10 |
12 | 218750000 | 0.4 | 37 | 256 qam | 11 |
13 | 226750000 | 0.2 | 37 | 256 qam | 12 |
14 | 234750000 | -0.5 | 37 | 256 qam | 13 |
15 | 242750000 | -0.9 | 37 | 256 qam | 14 |
16 | 250750000 | -0.2 | 37 | 256 qam | 15 |
17 | 258750000 | 0 | 37 | 256 qam | 16 |
18 | 266750000 | 0 | 37 | 256 qam | 17 |
19 | 274750000 | -0.7 | 37 | 256 qam | 18 |
20 | 282750000 | -0.2 | 37 | 256 qam | 19 |
21 | 290750000 | 1.7 | 38 | 256 qam | 20 |
22 | 306750000 | 2.5 | 38 | 256 qam | 22 |
23 | 314750000 | 2.5 | 38 | 256 qam | 23 |
24 | 322750000 | 3 | 38 | 256 qam | 24 |
Downstream bonded channels
Channel Locked Status RxMER (dB) Pre RS Errors Post RS Errors
1 | Locked | 38.6 | 12 | 0 |
2 | Locked | 37.3 | 177 | 0 |
3 | Locked | 37.3 | 172 | 0 |
4 | Locked | 37.3 | 118 | 0 |
5 | Locked | 37.6 | 63 | 0 |
6 | Locked | 37.3 | 42 | 0 |
7 | Locked | 37.6 | 41 | 0 |
8 | Locked | 37.3 | 17 | 0 |
9 | Locked | 37.6 | 21 | 0 |
10 | Locked | 37.3 | 25 | 0 |
11 | Locked | 37.3 | 23 | 0 |
12 | Locked | 37.6 | 31 | 0 |
13 | Locked | 37.3 | 25 | 0 |
14 | Locked | 37.3 | 30 | 0 |
15 | Locked | 37.6 | 59 | 0 |
16 | Locked | 37.6 | 43 | 0 |
17 | Locked | 37.3 | 44 | 0 |
18 | Locked | 37.6 | 44 | 0 |
19 | Locked | 37.6 | 46 | 0 |
20 | Locked | 37.6 | 53 | 0 |
21 | Locked | 38.6 | 30 | 0 |
22 | Locked | 38.9 | 21 | 0 |
23 | Locked | 38.6 | 18 | 0 |
24 | Locked | 38.6 | 15 | 0 |
Upstream bonded channels
Channel Frequency (Hz) Power (dBmV) Symbol Rate (ksps) Modulation Channel ID
1 | 39400000 | 44 | 5120 | 64 qam | 4 |
2 | 46200000 | 44 | 5120 | 64 qam | 3 |
3 | 53700000 | 45.5 | 5120 | 64 qam | 2 |
4 | 60300039 | 45.5 | 5120 | 64 qam | 1 |