Packetloss on iRacing and other games

Having random 100% packetloss spikes and constantly having %1 packetloss in Fortnite also and with random spikes on the latency and ping. Ran pingplotter and shows what I'm talking about. Had a tech come out last Wednesday told me, my line to the house looked fine but he could see something going on out at the box said "it's very little" as professional sim racer online racing requires a very strong and stable connection and sitting in game watching the "quality" (meaning my connection to the server) drop to 98 sometimes down to 95 and never hold 100 has been frustrating the last couple weeks as this issue just kinda popped up out of no where. Modem was switched out by the tech when he was here last Wednesday. The tech told me before he left, he put in a ticket for somebody to come out here and check the box outside. Since that's where he seen the interference/problem going on, in the coming days as it's Monday (don't expect them to work weekend) still no update and problem is still present.