Im sure you did your homework on this one, i think its great. There are couple of things that are true which makes me question if we really need this performance:

- most tabular content can be static -it can be optimized for reactivity;
- no user will need to see all data at once - download pdf or csv it if thats the case;
- powerful filtering (search) and pagination (or lazy scroll) can do the job - id add powerful aggregation if needed

Anyways, i dont want to discredit your work because you clearly pulled something amazing here but years of observing user’s dealing with tabular data makes me believe this is a very specific case solution. Most of the time you dont need it (like you been stating)

Good stuff. Keep at it 😊

P.s: React should never be a choice if you need performance