I choose the High-speed motor for my HSM30 and it seems to be working fine. I tried the High-torque option and the focuser made a very unhappy sound so I assumed high-torque was not the correct optioin.
Do you have the same problem of INDI resetting the focus position to 0 when you connect to the FocusLynx? I have posted a request to have INDI just connect and NOT reset the focus position but not sure how long it will take to be resolved.
No I have a different effect. I have to sync every time after (re)connecting before I can move focus at all. The last position is restored for me! But maybe my setup is not configured proper yet. I just switched from Windows with SGP to Linux with KStars/Ekos.