Intermittent lag even with fixes

Hello everyone, 

I have contacted support like 6 times this past 2 weeks to fix my issues because I have been getting imminent lag and it's is just getting so annoying because they are random times as well while either gaming or browsing. I have already power cycled my modem, refreshed my signal, directed more signal towards me (according to support they did that), and had a technician come and inspect my hardware. The technician said everything was fine and just rewired a new coaxial cable into my line but even that didn't seem to fix it. It seems like it is an area service issue where there would be imminent lag because I have a friend who lives around 7 blocks away and has the same issue. I have no idea what other way to fix this and it gets annoying while gaming and my zoom meetings.