App freezes when opening large documents

[bertob]

When loading the Reflection meeting notes (2.3k lines), the app freezes for about 5 seconds when opening the document from the document list. It takes so long that I get the "Reflection is not responding" dialog.

[jsparber]

When having multiple large operations. We call bytes_received() often. Resulting frequent imports to loro, which seam to be slow, and the imports are run in the UI thread so obviously blocking UI, but also causing the receiver of messages in node to lag behind.

We probably should not do loro delta imports in the UI thread, and figure out why we receive so many messages from p2anda (might go away with the new api

[adzialocha]

We probably should not do loro delta imports in the UI thread.

Oh ja, that's a good idea!

and figure out why we receive so many messages from p2panda

Interesting, I would have assumed that logs are frequently pruned (currently every 5 seconds, right?), so messages should be usually around the number of authors in the doc (so if there's 4 authors, we would have only 4 messages to process). Maybe something is off with the pruning logic aka the logic in reflection_doc which calls the pruning method?