Very slow upload speed

I have a Motorola NVG510 with Internet 12 plan.

Download speed is fine, but upload speed is very slow.

One example is video confrencing. It sometimes doesnt work, or it's extremely low quality when sending video.

I restarted my modem, reconnected wires to make sure connection is good to the wall. Turned off WIFI, and directly connected to the modem. (Usually it's slower upload than 0.81 Mbps.)

Here's my broadband status:

Broadband Connection Up

Broadband IPv4 Address 162.203.162.9

Gateway IPv4 Address 162.203.160.1

MAC Address cc:65:ad:24:00:81

Primary DNS 68.94.156.1

Secondary DNS 68.94.157.1

Primary DNS Name dnsr1.sbcglobal.net

Secondary DNS Name dnsr2.sbcglobal.net

MTU 1500

DSLAM Vendor ID b5004244434da3b8

DSL Status

Line State Up

Downstream Sync Rate (kbps) 14394

Upstream Sync Rate (kbps) 1020

Downstream Max Attainable Rate (kbps) 20712

Upstream Max Attainable Rate (kbps) 1189

Modulation ADSL2+

Data Path Interleaved

Downstream Upstream

SN Margin (dB) 7.5 9.6

Line Attenuation (dB) 27.0 16.7

Output Power(dBm) 18.4 12.1

Errored Seconds 0 0

Loss of Signal 0 0

Loss of Frame 0 0

FEC Errors 1594 0

CRC Errors 0 0

Timed Statistics

15 Min Cur Day Showtime Last Showtime Total

Errored Seconds (ES) 0 0 0 0 0

Severely Errored Seconds (SESL) 0 0 0 0 0

Unavailable Seconds (UASL) 0 75 0 0 75

FEC Errors 247 {{Payment Card Number detected, text hidden}}

CRC Errors 0 0 0 0 0

DSL Initialization Timeouts 0 1 0 0 1

IPv6

Status Available

Border Relay IPv4 Address 12.83.49.81

6rd Prefix 2602:300::

IPv4 Statistics

Transmit Packets 88559

Transmit Errors 0

Transmit Discards 0

Transmit Bytes 30015683

Receive Packets 110939

Receive Errors 0

Receive Discards 0

Receive Bytes 132025448

PTM Receive PDUs 110939

IPv6 Statistics

Transmit Packets 28435

Transmit Errors 0

Transmit Discards 0