The server meshing playtest of 2024/2/29 was in my experience absolutely fantastic. One of the most stable evo testing environments ever. the group I was with had a party nearly evenly distributed between Stanton and Pyro.
We couldn't see global in the other system, so only people who had partied beforehand were able to speak in party chat between the systems, but both text and audio in party chat worked. To add more people to the party we were able to pass lead between people in both systems so they could add members from global on both sides.
the trader app was either totally offline, or locked to a system. possibly just oversight.
there appears to have been a bug where from some places you could see both stars, although this could have been weird lighting or something else entirely.
The shard our group was in (010) had the stanton side go down first and recovery took about 3 minutes, with missions being lost, but armistice came back immediately and position and recovery were in good shape. I believe the pyro side went down a while later and had a short recovery as well. performance was comparable to live as far as frames per second and server time, but the thing we all noticed was that there were LOTS of NPCs in all of the landing zones and they were ACTIVE. walking, moving, seemingly purposefull. I didn't run any bunkers or anything to see what they were like in combat, but the space combat seemed responsive as well.
Personally I spent my time just engaging with it like a normal play session on a clean patch, buying ship equipment and prepping as if it was a new patch then starting to run bounty missions.
I'm super happy to have been part of this and I think it bodes well for future tests considering the improvement from even the last replication layer tests.
Disclaimer: NO IMAGES OR VIDEOS OF THE TESTS ARE TO BE POSTED IN THIS THREAD. Per CIG, discussion is no longer a breach of NDA, but all media is still protected. This is all my own experience and opinion.