Hi @Lerak,
Given that artifacts are pushed with the new P2P implementation, a node only needs 1/2 RTT for its notarization share to reach a peer.
We have done extensive performance tests, where we have simulated the network topology of the io67a subnet by simulating RTTs, packet loss, and bandwidth to mimic production settings.
Of course, if we see any regressions we will propose adjusting the delays again.