SmoothScroll
https://chrome.google.com/webstore/detail/smoothscroll/nbokbjkabcmbfdlbddjidfmibcpneigj?hl=ru
Step size [px] 60
Animation time [ms] 600
Acceleration scale 1
Acceleration delta [ms] 60
Pulse Scale 1
Arrow key step size [px] 60

Chromium Wheel Smooth Scroller
https://chrome.google.com/webstore/detail/chromium-wheel-smooth-scr/khpcanbeojalbkpgpmjpdkjnkfcgfkhb/related?hl=ru
Step Size 60
Smoothness(Forepart) 30
Smoothness 60
Acceleration Sensitivity 200
Acceleration by Travel Distance 2 (3)