On Apr 3 snapshot, packets are not lost anymore. The issue was some how resolved.
The ping is very slow, however. The SSH console and the Web UI too. Roundtrip delay is now about 900 ms on average. It looks like everything is now getting into the qP2P queue, which is my Penalty and Catch-all queue (it is on the top on my Floating Rules page) and which is the only queue having an upper-limit curve width bandwidth=1%, m1=0, d=1000ms, m2=50%.
I'll send you my configs later when I'll get access to the local console. Now it is a real pain to work with it remotely.
I'll test the reloads later, as pftop is inaccessible in the current snapshot. Thanks for consideration.
Reply from 192.168.0.74: bytes=32 time=997ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1003ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1005ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1002ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1003ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1004ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1003ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1004ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1003ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1009ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1004ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1003ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1003ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1002ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1002ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1002ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1006ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1000ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1002ms TTL=62
Reply from 192.168.0.74: bytes=32 time=1001ms TTL=62
Ping statistics for 192.168.0.74:
Packets: Sent = 32840, Received = 32814, Lost = 26 (0% loss),
Approximate round trip times in milli-seconds:
Minimum = 0ms, Maximum = 1027ms, Average = 873ms