Yes, i use this mouse in fs2020
I have progammed the buttons to key commands “alt 1” to “alt 0” and “end” “ins” with the razer software. Total of 12 buttons.
I set my custom views that i want in the sim with ctrl+alt” + number and it works perfect by clicking the mouse buttons. I use the same buttons for saved views, like frontpanel, close panel, OVH, FMC, throttle, pedestal, left, right, tablet, Ap.