This was just a quick test to see if I can make the tick system spread its workload over time, but instead, after just 20 mins of doing some small changes, I got this. where 1 block updates. I don't understand as of now why this happens. But it does.
This was made at 1.5,2 remix*6 version, halfway through development. original Teardown 2D linked here: https://scratch.mit.edu/projects/825539821/