high latency and high Jitter

hello,

i have very high latency and jitter over day and night. when i play game online, it is even slower and much more laggy than my cellphone's hotspot.

Used Traceroute from the router, it shows below. 

Status: Complete !
1: 116,394,2 10.72.120.1 10.72.120.1
2: 229,130,11 100.120.105.86 100.120.105.86
3: 33,47,9 100.120.104.8 100.120.104.8
4: 193,81,42 langbprj01-ae1.rd.la.cox.net 68.1.1.13
5: 175,305,48 74.125.51.174 74.125.51.174
6: *
7: 237,44,243 dns.google 8.8.8.8

i have asked COX Technician to my home and he is not able to fix the issue.