Upload Speeds At Unusable Rates

[camdrit]

So I'm a at my wits end with this. I am on the Gigabit plan. For the past few weeks our upload speeds have been shockingly low to the point that pushing data out has been nigh impossible. I'm talking consistent rates of 0.11 - 0.3Mbps. I have a roommate who is a professional artist that can't send work to clients and I cannot push work that I'm doing to the office. Beyond that, sending simple pictures via IM doesn't even work. We've been able to get by with tethering cellular data but that's a temporary solution.

Download speeds continue to be great, 200-300Mbps wireless and 900Mbps wired. The upload speed is bad via both wired/wireless. I've been through several reboots and factory resets of my xFi Gateway. We have the ARRIS TG3482G. Have placed a call with support and after they tried some things they sent out a technician. The technician found that there was some cabling that was old and he replaced it but this had zero effect on the upload speeds. There haven't been any known outages in my area.

Signals are below. I'm not sure how to proceed at this point.

Downstream	Channel Bonding Value
Index	5	0	2	3	4	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31	32
Lock Status	Locked	NotLocked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked	Locked
Frequency	495000000		477000000	483000000	489000000	507000000	513000000	519000000	525000000	531000000	537000000	543000000	549000000	555000000	561000000	567000000	573000000	579000000	585000000	591000000	597000000	603000000	609000000	615000000	621000000	627000000	639000000	645000000	651000000	657000000	663000000	669000000	611600000
SNR	40.366287		40.366287	40.366287	40.366287	40.366287	40.366287	40.366287	40.366287	40.366287	40.366287	40.946209	40.366287	40.366287	38.983261	38.983261	38.983261	38.605377	38.983261	38.983261	38.605377	38.605377	38.605377	38.605377	38.983261	38.605377	38.605377	38.605377	38.983261	38.605377	38.605377	38.605377	NA
Power Level	0.500000		0.599998	0.500000	0.400002	0.200001	0.299999	0.400002	0.299999	0.200001	0.200001	0.099998	0.000000	-0.099998	-0.400002	-0.700001	-1.500000	-1.799999	-2.000000	-2.299999	-2.400002	-2.299999	-2.299999	-2.799999	-3.299999	-3.299999	-3.700001	-3.900002	-3.700001	-3.500000	-3.799999	-3.900002	NA
Modulation	QAM256	UNSUPPORTED	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	QAM256	OFDM

Upstream	Channel Bonding Value
Index	1	2	3	4
Lock Status	Locked	Locked	Locked	Locked
Frequency	35800000	16600000	23000000	29400000
Symbol Rate	5120 KSym/sec	5120 KSym/sec	5120 KSym/sec	5120 KSym/sec
Power Level	42.520599	40.770599	41.520599	41.770599
Modulation	64QAM	64QAM	64QAM	64QAM
Channel Type	US_TYPE_ATDMA	US_TYPE_ATDMA	US_TYPE_ATDMA	US_TYPE_ATDMA

CM Error Codewords
Unerrored Codewords	7274	559030611	7273	7274	7274	7273	7274	7274	7273	7274	7274	7273	7274	7274	7274	7274	7273	7274	7274	7273	7274	7273	7274	7274	7274	7273	7273	7274	7273	7274	7274	7273
Correctable Codewords	0	3735936685	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0
Uncorrectable Codewords	0	3735936685	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0	0

[camdrit]

Just realized I forgot to include Event Logs so I am bumping this thread with that. Anyone have any ideas?

[Harvester][2877]: Harvester StartRadioTrafficHarvesting Starting Thread to start RadioTraffic Data Harvesting	2020/7/14 03:39:59	Notice
[Harvester][2877]: Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting	2020/7/14 03:39:59	Notice
ti_dhcp6c[9482]: 72001011-DHCPv6 - Missing Required Option 82	2020/7/14 03:39:06	Critical
ti_dhcp6c[9482]: 72001011-DHCPv6 - Missing Required Option 24	2020/7/14 03:39:06	Critical
ti_dhcp6c[9482]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Tue Jul 14 08:39:05 2020	2020/7/14 03:39:06	Critical
ti_dhcp6c[9482]: 72001015-DHCPv6 Failed - No Prefix Available	2020/7/14 03:39:05	Critical
ti_dhcp6c[9482]: 72001014-DHCPv6 Failed - No Address Available	2020/7/14 03:39:05	Critical
ti_dhcp6c[9482]: 72001011-DHCPv6 - Missing Required Option 82	2020/7/14 03:39:05	Critical
ti_dhcp6c[9482]: 72001011-DHCPv6 - Missing Required Option 24	2020/7/14 03:39:05	Critical
DHCPv4[8519]: 72001001-DHCPv4 Provision - Completed	2020/7/14 03:38:59	Informational
ti_dhcp6c[10667]: 72001011-DHCPv6 - Missing Required Option 82	2020/7/13 18:57:58	Critical
ti_dhcp6c[10667]: 72001011-DHCPv6 - Missing Required Option 24	2020/7/13 18:57:58	Critical
ti_dhcp6c[10667]: 72001011-DHCPv6 - Missing Required Option 82	2020/7/13 18:57:48	Critical
ti_dhcp6c[10667]: 72001009-DHCPv6 - No Advertise or Reply Received 1 times	2020/7/13 18:57:48	Critical
[Harvester][2856]: Harvester StartRadioTrafficHarvesting Starting Thread to start RadioTraffic Data Harvesting	2020/7/11 21:36:30	Notice
[Harvester][2856]: Harvester StartAssociatedDeviceHarvesting : Started Thread to start DeviceData Harvesting	2020/7/11 21:36:30	Notice
ti_dhcp6c[10667]: 72001011-DHCPv6 - Missing Required Option 82	2020/7/11 21:36:04	Critical
ti_dhcp6c[10667]: 72001011-DHCPv6 - Missing Required Option 24	2020/7/11 21:36:04	Critical
ti_dhcp6c[10667]: 72001004-DHCPv6 Provision - 0 Retries Attempted with Last attempt at Sun Jul 12 02:36:03 2020	2020/7/11 21:36:04	Critical
ti_dhcp6c[10667]: 72001015-DHCPv6 Failed - No Prefix Available	2020/7/11 21:36:03	Critical

[camdrit]

Things are getting worse and worse. Upload speed is now around 60kbps....

I have another call scheduled this afternoon with support. I am not hopeful that much will be done. Can anyone here provide some guidance? Is there something specific I need to ask for?

I notice that the drop outside doesn't have an amplifier (at least not that I can tell) do I need to ask for one to be installed?

EDIT: Based on a suggestion from someone on r/Comcast_Xfinity I took the modem outside and plugged the coax line from the post directly into it. Speed test came back 46Mbps up...so that determined that the issue is from the drop going into the house. I just hope that a technician can do a replacement for this.