Thanks for the update.
I’m just curious if the defect of the other hardware is the DM74LS393N IC.
It might be getting damaged in the long run since we are violating the abs max.
If it is then we will go with your solution.
Please document the necessary changes including change in the program if there is any
Please try to correlate the scope measurement (provide pictures) versus the ATE measurement with your new solution.
Do it on at least 3 devices.