The situation is a bit better, but still weird…
This graph is memory usage in the last 24 hours. The leftmost 03 on X axis means March,27,h15:00.
yesterday at 16:00 I disabled QUIC locally and restarted Syncthing (shown as the leftmost 04 in the graph above). Syncthing logs:
[start] 16:00:12 INFO: syncthing v1.4.0 "Fermium Flea" (go1.13.8 linux-arm64) firstname.lastname@example.org 2020-03-06 19:52:22 UTC
[start] 16:00:12 INFO: Using large-database tuning
Memory climbed up after a while, then decreased and at about midnight, suddenly dropped.
In the logs, there’s literally nothing. The last line from yesterday is at 16:04, the next line is 10am today.
[B3TV5] 16:04:07 INFO: Device ... client blah blah
[B3TV5] 10:20:37 INFO: Connection to ... at ... closed: read timeout