Under heavy load, the animation freezes in an intermediate position

Download and run attached application.

In the test case TestApp.zip , the processor is loaded within 5 seconds. At this moment, a data input is sent to play the animation in the sub-presentation slide. The animation freezes image-2021-02-11-14-37-07-403.png . And after removing the load from the processor, the animation remains in such an intermediate state (it is not played to the end).

The end state of the animation when played without CPU load image-2021-02-11-14-48-52-527.png .

The more time load on the CPU, the more freezing and underplaying until the end of the animation.

Expected result:
We don't expect the animation to run smoothly, but we do expect it to go to the end.