How to reduce lagg on TNT

When it explodes, the server sleeps for a second, the problem may be Event::getBlockList(), which returns about 100 blocks, would it reduce lagg when I would use foreach with coordinates, to remove the blocks at the explosion? What should I use to reduce lagg too? What do you recommend?

blocks count (lag) depends on explosion size, and you are right, but i think you can not reduce lag a lot.
and what explosion do you need? just particle or explosion that damages entities, or full explosion?

The explosiong should only remove blocks.

Php has slow arrays so if chunk has around 15 000 blocks and getblock() method search in it 100 Times. You can make your own method for Getting blocks in explosion radius. IT should be faster but idk maybe block cache has private access

Cancel EntityExplodeEvent and execute your own code to clear the blocks.

But he want to reduce lag. This only lags server for more time

Well if he doesn't do it PocketMine will

No pocketmine do it before this event

Then that's odd, why it's Cancellable then?

But server still checks all blocks.. He should make his own method