From what I gather, we agree there is still an issue with Oimo’s setMotor that is external to babylon.
Current recommendations from JohnK are rename setMotor parameters from speed and maxForce to speed and force. And if force is not set in the oimo plugin, default to 1e6.
That solution sounds good to me, I can create a PR for that and PRs are welcome in the future for solving the oimo stuttering issue.