So why does 1 team lag way more than the other

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specs/gear/settings:

Quality all low
Fov: 120
Resolution 1440p
sensitivity: 3
scope sens: 3
DPI: 1200

Gear:
Mouse: Fnatic clutch 2
Mousepad: Fnatic focus 2 SQR
Headset: Hyperx Cloud 2
Keyboard: Fnatic Streak
webcam: Logitech HD Pro Webcam C920
Microphone: Audio Technica AT2035
SPECS:

CPU: Intel i7-9700K 3.6GHz 8-Core
CPU Cooler: Hyper 212 EVO
Motherboard: Gigabyte Z370P D3 ATX LGA1151
RAM: G.Skill - Ripjaws V Series 32 GB (2 x 16 GB) DDR4-3200
SSD 1: Samsung - 970 Evo 500 GB M.2-2280
SSD 2: Samsung - 860 Evo 1 TB 2.5"
GPU: Gigabyte - GeForce RTX 2080 8 GB
Power Supply: EVGA - SuperNOVA G3 750 W
Case: NZXT H700 Blue/black

other