10Gigabit LAN speed

Why does norton 360 net slow down my 10Gigabit LAN?

LAN network real speed is 9.50Gbps without Norton360 installed. When I install Norton360 speed drops down to 1.5Gbps… 1.5Gbps!!!
The speed is between my desktop and synology.

Is there a setting that can be changed to not lose speed with norton 360 installed???