Microlags in game

Greetings. Noticed that i see some freezes 1-2 per minute.
Thought that this is because of not oprimal graphical settings.
Set lowest - didn’t help (notebook with RTX3080)

After found out that if i turn network settings - i see that lags exactly when this graph has that white markers.
watch screenshot https://ibb.co/wL6b1C8

Maybe someone know what it could be?
Is it really some connection problems (i have stable 500 Mbit wired connection, ping 30-40) or that graph grlitch just a result of graphihal/client glitch ?

Thank you !