I game on PC, Windows 10 x64 over ethernet cable. Rocket League is my go to competitive game and over time the latency variation has gradually gotten worse and made the game, without exaggeration, unplayable. We're on the Gig1 package and the speeds are great, can't complain on that front and someone is usually watching video content from streaming services, but whatever effect that could have on latency I refuse to believe it could be as significant as it is.
Edit: Have tried putting the hub into modem mode with no effect.
Here is a bqm and downstream power levels:

3.0 Downstream channels
Channel Frequency (Hz) Power (dBmV) SNR (dB) Modulation Channel ID
25 | 331000000 | 0.6 | 38.6 | QAM256 | 25 |
6 | 179000000 | 0.9 | 38.6 | QAM256 | 6 |
7 | 187000000 | 0.9 | 38.6 | QAM256 | 7 |
8 | 195000000 | 0.9 | 38.6 | QAM256 | 8 |
9 | 203000000 | 0.8 | 38.6 | QAM256 | 9 |
10 | 211000000 | 1 | 39 | QAM256 | 10 |
11 | 219000000 | 1 | 39 | QAM256 | 11 |
12 | 227000000 | 1 | 38.6 | QAM256 | 12 |
13 | 235000000 | 1.2 | 39 | QAM256 | 13 |
14 | 243000000 | 1.3 | 39 | QAM256 | 14 |
15 | 251000000 | 1.1 | 39 | QAM256 | 15 |
16 | 259000000 | 1.5 | 39 | QAM256 | 16 |
17 | 267000000 | 1.4 | 39 | QAM256 | 17 |
18 | 275000000 | 1.2 | 39 | QAM256 | 18 |
19 | 283000000 | 1.2 | 39 | QAM256 | 19 |
20 | 291000000 | 1.4 | 39 | QAM256 | 20 |
21 | 299000000 | 1.6 | 39 | QAM256 | 21 |
22 | 307000000 | 1.4 | 38.6 | QAM256 | 22 |
23 | 315000000 | 1.3 | 40.4 | QAM256 | 23 |
24 | 323000000 | 1 | 39 | QAM256 | 24 |
26 | 339000000 | 0.5 | 39 | QAM256 | 26 |
27 | 347000000 | 0.4 | 39 | QAM256 | 27 |
28 | 355000000 | 0.1 | 38.6 | QAM256 | 28 |
29 | 363000000 | -0.1 | 39 | QAM256 | 29 |
30 | 371000000 | -0.2 | 39 | QAM256 | 30 |
31 | 379000000 | -0.1 | 38.6 | QAM256 | 31 |
1 | 139000000 | 1.7 | 38.6 | QAM256 | 1 |
2 | 147000000 | 1.3 | 38.6 | QAM256 | 2 |
3 | 155000000 | 1.4 | 38.6 | QAM256 | 3 |
4 | 163000000 | 1.3 | 39 | QAM256 | 4 |
5 | 171000000 | 1.1 | 38.6 | QAM256 | 5 |
3.0 Downstream channels
Channel Lock Status RxMER (dB) Pre RS Errors Post RS Errors
25 | Locked | 38.605377 | 0 | 0 |
6 | Locked | 38.605377 | 0 | 0 |
7 | Locked | 38.605377 | 0 | 0 |
8 | Locked | 38.605377 | 0 | 0 |
9 | Locked | 38.605377 | 0 | 0 |
10 | Locked | 38.983261 | 0 | 0 |
11 | Locked | 38.983261 | 0 | 0 |
12 | Locked | 38.605377 | 0 | 0 |
13 | Locked | 38.983261 | 0 | 0 |
14 | Locked | 38.983261 | 0 | 0 |
15 | Locked | 38.983261 | 0 | 0 |
16 | Locked | 38.983261 | 0 | 0 |
17 | Locked | 38.983261 | 0 | 0 |
18 | Locked | 38.983261 | 0 | 0 |
19 | Locked | 38.983261 | 0 | 0 |
20 | Locked | 38.983261 | 0 | 0 |
21 | Locked | 38.983261 | 0 | 0 |
22 | Locked | 38.605377 | 0 | 0 |
23 | Locked | 40.366287 | 0 | 0 |
24 | Locked | 38.983261 | 0 | 0 |
26 | Locked | 38.983261 | 0 | 0 |
27 | Locked | 38.983261 | 0 | 0 |
28 | Locked | 38.605377 | 0 | 0 |
29 | Locked | 38.983261 | 0 | 0 |
30 | Locked | 38.983261 | 0 | 0 |
31 | Locked | 38.605377 | 0 | 0 |
1 | Locked | 38.605377 | 0 | 0 |
2 | Locked | 38.605377 | 0 | 0 |
3 | Locked | 38.605377 | 0 | 0 |
4 | Locked | 38.983261 | 0 | 0 |
5 | Locked | 38.605377 | 0 | 0 |
3.1 Downstream channels
Channel Channel Width (MHz) FFT Type Number of Active Subcarriers Modulation (Active Profile) First Active Subcarrier (Hz)
3.1 Downstream channels
Channel ID Lock Status RxMER Data (dB) PLC Power (dBmV) Correcteds (Active Profile) Uncorrectables (Active Profile)
159 | Locked | 41 | 0.3 | 2189193322 | 0 |
Any help or guidance would be greatly appreciated.