[help] swiftemu r5 lagging ! [emergency]

RaGEZONE Hello, I have a retro R63B using SwiftEmu R5 A3 that I improved but unfortunately there's a big bug that I did not manage to fix: When in an apartment there are over 20 users, it's very hard to walk or discuss without lag (10 seconds of latency). I have a fairly powerful VPS which does not affect the CPU. I already disabled the packetlogging and here is my configuration :




If someone have an idea of fix just post a comment please !