Hi Jed,
There are several status command that can be run that may give us some information on what is happening. Take a look at this post here.
Once you get this busy error I would be curious to know what is reported (or not reported) from the status commands.
I’m also surprised to see three odriveagent procs. I would expect only two. That is something else to take a look at. If there is a rogue instance running that could cause some issues with conflicting behavior between the processes.