Network dropping

Hello, 

I have been having a lot of issues with my network dropping packets and having huge ping spikes throughout the day. I have had a technician out but they have told me there is nothing they can do. I bought a different modem and it made it slightly better but the issues are still occurring.  Here is what my modem is doing:

https://imgur.com/a/aHRKeG8

What else can I do if the technician said there is nothing she can do but the issues are still occurring?