Ok for employer to set 2 hour paid limit for completing mandatory online training?

I am a non-exempt employee in healthcare working in a fast-paced patient care area. My employer has quarterly mandatory online education requirements that must be completed by a certain date to maintain our jobs. They state we are required to "try and get this done while at work" however, do not provide coverage for patient care duties or a private area with a computer and headset/speakers to do the training which often includes listening to PowerPoint lectures and watching videos prior to taking a quiz to validate understanding.
We are expected to try and use our patient care computers in the patient care areas while caring for our patients to complete this mandatory training. If there is low census and the department is even a little “slow”, the supervisors are required to send patient care staff home. We are not allowed to stay to complete the education as that would impact the productivity numbers for that shift.
With specific permission from the manager, employees can do the training at home if they can prove they absolutely could not find time to complete while on duty. However, we are told we can turn in two hours maximum for pay no matter how long the actual mandatory training completion takes. When logging in to the program to do the training, each module shows how long the prerecorded videos and powerpoint lectures are in addition to the expected number of minutes for any other training that is just reading content and answer questions. Often these numbers total more than 6 hours each quarter.

Most of my colleagues are finding creative work arounds to meet the letter of the law while minimizing the amount of time spent on education. One quarter, a someone wrote out all the answers to all the quizzes and passed this information around so everyone could skip the content and get done quickly. Another quarter, someone else who wasn’t busy got the logins for several of the staff on duty and then did all their education for them as she had the answers memorized. Other staff just do the education at home and don’t turn in the time for the actual length it took them to complete the training.
Our employer uses our successful completion of the training to validate our knowledge and competency on various topics as required by outside certifying agencies.
I believe the requirement to have staff complete all their mandatory education while on duty providing patient care is a “higher up” administrative requirement to save money which does not take in to account the realities of the pressure for maintaining productivity and thus virtually eliminating any downtime which historically may have been present and could have allowed employees time for doing online training while on shift.