Packet Loss

Since I've moved to my new address, about 2 months ago, I've gotten severe packet loss, mostly at night from 5pm-12am.  Those times vary slightly each day, but its more or less the same time every day.  The loss can range from 1 or 2 percent, all the way to 40 or 50.  I've had 3 techs out to test my lines, and they all say that the packet loss seems to be coming from the tap.  So far we've tried around 5 or 6 modem/router combos, and I even went out and purchased my own router and modem.  I normally test through cat 6 ethernet, via ping plotter, tracert, and the cmd line "ping google.com -n 1000".  I have also tested this on both mine, and my girlfriends phones, via NCX, as well as her laptop.  I've also run a seperate Hirens boot, on a secondary drive, to test from there both with router, and with bypassing the router.

One problem is that two of the techs have been contracted and apparently never sent anything to the maintenance team, even though they said they would.  The in-house tech did send it to maintenance, who came out, removed an amplifier and promptly left.  Since they didn't come during the hours of the problem, 5-12, they apparently didn't see packet loss, and left.

There are weeks-worth of notes on my account, where customer service has documented their own tests of my massive packet loss, but so far maintenance hasn't come out a second time.  

Here are the stats on my modem
https://imgur.com/HZdo4sx

I've begged to speak to a level 2 or 3 tech, or even to the maintenance team, because I don't feel like they're getting all the info they need before coming out, but no one has afforded me that opportunity.

I've filed a Complaint with the public service commission, in hopes that Cox will address this issue properly.