Poor performance continues after tech visit and new modem

I had a docsis 3.0 modem until about a week ago. It was seeing speeds around 250 down most of the time; I have a 1 Gbs plan. A comcast tech came and told me that the line was great and the only issue was that I had a 3.0 modem; recommended a docsis 3.1.

I bought an arris G34 docsis 3.1 modem and have it configured as the internet modem; the prior modem is doing duty on the telephony side. Right now I am testing it's speeds via a cat 6 cable plugged directly into the new modem.

The the old modem I had one 600 mbs on speedtest.net; but common down was 250 or so. The new modem has shown 944 once; but most of the time it's still terrible, 70, 134,270 download. Upstream is usually 42 with either modem. I'm using the speedtest.net windows application.

I'm posting some signal info; I don't know how to interpret but apparently it's not good.

Hmm guess I can't post an image here?

As text:

Downstream QAM
Index Frequency (MHz) Power Level (dBmV) SNR (dB) Modulation Lock Status
47 675 -6.799999 37.636276 QAM256 Locked
20 507 -2.799999 38.605377 QAM256 Locked
17 483 -2.599998 38.605377 QAM256 Locked
18 489 -2.599998 38.983261 QAM256 Locked
19 495 -2.700001 38.983261 QAM256 Locked
21 513 -3.000000 38.605377 QAM256 Locked
22 519 -3.200001 38.605377 QAM256 Locked
23 525 -3.400002 38.983261 QAM256 Locked
24 531 -3.400002 38.983261 QAM256 Locked
25 543 -3.700001 38.983261 QAM256 Locked

Downstream OFDM
Index FFT Type Channel Width (dB) # of Active Subcarriers First Active Subcarrier (MHz) Last Active Subcarrier (MHz) Avg RxMER Pilot (dB) Avg RxMER PLC (dB) Avg RxMER Data (dB) Power Level (dBmV) Modulation Lock Status
48 4K 96 1880 769 862 43 37 37 -9.7 QAM4096 Locked

Upstream QAM
Index Frequency (MHz) Power Level (dBmV) Channel Type Symbol Rate (KSym/sec) Modulation Lock Status
2 22.8 39.770599 US_TYPE_ATDMA 5120 KSym/sec 64QAM Not Locked
4 35.6 40.770599 US_TYPE_ATDMA 5120 KSym/sec 64QAM Locked
3 29.2 40.520599 US_TYPE_ATDMA 5120 KSym/sec 64QAM Locked
1 16.4 39.270599 US_TYPE_ATDMA 5120 KSym/sec 64QAM Locked

The last time I looked at this data there were only three upstream channels listed; one of those was locked.