pre-technician visit questions (knowledge needed)

My arrangement:

Gigablast speeds 940/35

ARRIS SB8200  32×8

Brand new coax ran through home. 

1 splitter tap, -16db to cable TV box and throughput to cable modem.

All connections secured tightly.

Downstream/upstream channels all in cox recommend ranges.

My known issues: 

T3 timeouts

Excessive  Packet loss while gaming, especially at night.

Upload speeds inconsistent 

Some of the lines down the road are covered by trees and are beginning to droop down. 

My neighbor has major issue and is running off of the samw utility pole as i. Ive heard people say that other people issues can created negative effects on neighbors signal. Noise maybe.

Technician also mentioned something about my cable running along lines with lights that come on at night on utility pole may be interfering with my signal

Issues were here before covid congestion so its not that .

What should I be telling my technician this afternoon?