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Inconsistent/Extremely Low Upload Speeds

I have the COX Ultimate internet package (300 down and 30 up). I decided to start streaming this summer which made me realize that I have extremely inconsistent and mostly low upload speeds. My download speeds are more then adequate ranging from 200-350 MBps. My upload speeds however tend to hover around 2 Mbps. At various times in the day it might get closer to the advertised speeds but inevitably will plummet back down. More often than not the speeds are too low to stream which is extremely frustrating. 

I am using a Netgear AC1900 Model C7000v2 for a modem/router. The connection is wired straight from the modem to the computer. The computer is brand new with all updated drivers. There are no spliiters and coaxial cable runs from the wall straight to the modem. I've tried just about everything I can think of but my knowledge is not that expansive.

Furthermore I did have a technician come out. He rewired the line to the house from the street due to the presence of damage. So to my knowledge all of the line involved is brand new. However, the problem persisted afterwards.

I've tried calling multiple times but all the help I receive tends to be generic restart the modem suggestions.

Any help would be greatly appreciated.

Tanner H.

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    Time Priority Description
    1970-1-1, 00:00:39 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
    1970-1-1, 00:00:41 Critical (3) SYNC Timing Synchronization failure - Failed to acquire FEC framing;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
    1970-1-1, 00:00:42 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
    2019-6-8, 20:12:03 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    1970-1-1, 00:00:38 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
    2019-6-8, 20:17:23 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-8, 21:36:03 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    1970-1-1, 00:00:38 Critical (3) SYNC Timing Synchronization failure - Failed to acquire QAM/QPSK symbol timing;;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=00:00:00:00:00:00;CM-QOS=1.0;CM-VER=3.0;
    1970-1-1, 00:00:41 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INIT
    1970-1-1, 00:00:41 Notice (6) WiFi Interface [wl1] set to Channel 153 (Side-Band Channel:N/A) - Reason:INIT
    1970-1-1, 00:00:45 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.0;CM-VER=3.0;
    1970-1-1, 00:00:49 Notice (6) Honoring MDD; IP provisioning mode = IPv4
    1970-1-1, 00:00:52 Critical (3) DHCP FAILED - Discover sent, no offer received;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.0;CM-VER=3.0;
    1970-1-1, 00:00:55 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.0;CM-VER=3.0;
    1970-1-1, 00:00:57 Warning (5) ToD request sent - No Response received;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.0;CM-VER=3.0;
    2019-6-10, 06:29:28 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:29:28 Notice (6) TLV-11 - unrecognized OID;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:29:31 Critical (3) REG RSP not received;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:29:43 Error (4) T6 Timeout and retries exceeded;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:29:53 Notice (6) Honoring MDD; IP provisioning mode = IPv4
    2019-6-10, 06:29:57 Warning (5) DHCP WARNING - Non-critical field invalid in response ;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:29:57 Notice (6) TLV-11 - unrecognized OID;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:30:04 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:30:46 Critical (3) Received Response to Broadcast Maintenance Request, But no Unicast Maintenance opportunities received - T4 time out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 06:57:53 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 07:36:05 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INTERFERENCE
    2019-6-10, 07:44:27 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 08:36:26 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INTERFERENCE
    2019-6-10, 08:39:01 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 09:06:35 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INTERFERENCE
    2019-6-10, 09:10:59 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 09:36:46 Notice (6) WiFi Interface [wl0] set to Channel 1 (Side-Band Channel:N/A) - Reason:INTERFERENCE
    2019-6-10, 09:40:16 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
    2019-6-10, 11:07:12 Notice (6) WiFi Interface [wl0] set to Channel 11 (Side-Band Channel:N/A) - Reason:INTERFERENCE
    2019-6-10, 11:12:27 Critical (3) Started Unicast Maintenance Ranging - No Response received - T3 time-out;CM-MAC=3c:37:86:f1:bb:48;CMTS-MAC=b0:90:7e:0e:40:f0;CM-QOS=1.1;CM-VER=3.0;
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