The coding for Positioner setup needs updating. Shown below in the screencap, the red is the correct code, and the green code is what is in TNAP5. Probably the best thing to do here is to forget about updating this in TNAP 5, and focus instead on TNAP 5.1. Your spinner and lagging problem may still exist, even if this code is corrected as you may have something running. You can check and monitor what is running by opening a terminal and typing top.

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Here is what the top command in terminal looks like with Positioner setup running Autofocus.
[Only registered and activated users can see links. ]