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Thanks! who is the person that SHOULD know about the exact limits and restoration? I would try to ask.

Anyone who has the ability to read and understand the C++ blockchain code. Unfortunately there are not a lot of people who can do that, and the few who can have a lot on their plate.

None of the Top 100 or 20 witnesses can explain this?

The only ones I know of have a lot on their plate.

That's true, but we know only one thing that, if more Steem Power then more Bandwidth.