@gary_b I get where you're coming from, but, did you bother looking at the ADDAC website? A quick look on the module's page shows
Last update version: D_5, April, 23rd, 2024
D_5 Changes Log:
* FIXED: An issue where at maximum speed the module controls will become irresponsive after a few minutes.
along with steps for the update. How about you give it a try?