Inconsistent speed and low SNR

[6951758]

Greetings everyone, I have 600mb plan and a pretty new arris SB6190 I bought this year. I was getting download speeds from 600-700 but now it ranges from 30mb-450mb while conducting the speed test on the xfinity site ending up around 150mb.

Checking the modem status I see that channel 32 has a low SNR of 23-34dB and will drop to "Not Locked" then eventually come back on. I checked direct to the modem outside with a laptop where the coax hits the house from the ground and its the same. Event log has Lost MDD time out and RCS Partial service errors. Ive been reading a ton on this site to try and figure out what the normal specs are and I guess i'm seeing interference on that frequency.

Attached are status results with the modem installed like normal, inside the house. If the tech coming out finds that the line from the pedestal to my house is bad do I need to pay for that?

Downstream Bonded Channels

Channel	Lock Status	Modulation	Channel ID	Frequency	Power	SNR	Corrected	Uncorrectables
1	Locked	256QAM	5	483.00 MHz	0.50 dBmV	38.61 dB	0	0
2	Locked	256QAM	38	429.00 MHz	1.10 dBmV	38.98 dB	0	0
3	Locked	256QAM	39	435.00 MHz	1.10 dBmV	40.37 dB	0	0
4	Locked	256QAM	40	441.00 MHz	0.80 dBmV	38.98 dB	0	0
5	Locked	256QAM	41	453.00 MHz	0.80 dBmV	38.98 dB	5	0
6	Locked	256QAM	1	459.00 MHz	0.70 dBmV	38.98 dB	0	0
7	Locked	256QAM	2	465.00 MHz	0.50 dBmV	38.98 dB	0	0
8	Locked	256QAM	3	471.00 MHz	0.80 dBmV	38.98 dB	0	0
9	Locked	256QAM	4	477.00 MHz	0.60 dBmV	38.61 dB	0	0
10	Locked	256QAM	6	489.00 MHz	0.90 dBmV	38.98 dB	0	0
11	Locked	256QAM	7	495.00 MHz	0.60 dBmV	38.98 dB	0	0
12	Locked	256QAM	8	501.00 MHz	0.70 dBmV	38.61 dB	0	0
13	Locked	256QAM	9	507.00 MHz	0.60 dBmV	38.61 dB	0	0
14	Locked	256QAM	10	513.00 MHz	0.60 dBmV	38.61 dB	0	0
15	Locked	256QAM	11	519.00 MHz	0.30 dBmV	38.98 dB	0	0
16	Locked	256QAM	12	525.00 MHz	0.40 dBmV	38.98 dB	0	0
17	Locked	256QAM	13	531.00 MHz	0.20 dBmV	38.61 dB	0	0
18	Locked	256QAM	14	537.00 MHz	0.10 dBmV	38.98 dB	0	0
19	Locked	256QAM	15	543.00 MHz	0.30 dBmV	38.61 dB	0	0
20	Locked	256QAM	16	549.00 MHz	0.30 dBmV	38.98 dB	0	0
21	Locked	256QAM	17	555.00 MHz	0.10 dBmV	38.61 dB	0	0
22	Locked	256QAM	18	561.00 MHz	-0.10 dBmV	38.98 dB	0	0
23	Locked	256QAM	19	567.00 MHz	-0.70 dBmV	38.98 dB	0	0
24	Locked	256QAM	20	573.00 MHz	-1.40 dBmV	38.98 dB	0	0
25	Locked	256QAM	21	579.00 MHz	-1.00 dBmV	38.90 dB	0	0
26	Locked	256QAM	22	585.00 MHz	-1.00 dBmV	38.60 dB	0	0
27	Locked	256QAM	23	591.00 MHz	-0.10 dBmV	38.60 dB	0	0
28	Locked	256QAM	24	597.00 MHz	0.30 dBmV	38.90 dB	0	0
29	Locked	256QAM	25	603.00 MHz	0.60 dBmV	38.60 dB	0	0
30	Locked	256QAM	26	609.00 MHz	0.60 dBmV	38.90 dB	0	0
31	Locked	256QAM	27	615.00 MHz	0.60 dBmV	37.60 dB	0	0
32	Not Locked	----	28	621.00 MHz	----	----	----	----

When 32 gets a lock itll look like this. Lowest ive seen is 23dB

32

Locked

256QAM

28

621.00 MHz

0.40 dBmV

34.30 dB

43452

147898

Upstream Bonded Channels

Channel	Lock Status	US Channel Type	Channel ID	Symbol Rate	Frequency	Power
1	Locked	ATDMA	1	5120 kSym/s	35.60 MHz	40.50 dBmV
2	Locked	ATDMA	4	5120 kSym/s	16.40 MHz	41.00 dBmV
3	Locked	ATDMA	3	5120 kSym/s	22.80 MHz	40.75 dBmV
4	Locked	ATDMA	2	5120 kSym/s	29.20 MHz	40.75 dBmV

Should I be trying to resolve this or do I need a tech? I used the xfinity chat to get one out but I have to wait 2 weeks from now when Im back from a work trip.