hi, sorry for time put to answer you, but job and everything... héhé...

In fact, it does not work well because the server must send too much information to the clients all at once, therefore this was decelerated...

I must use "Effect"... But there I have another probleme héhé

when I put "Effect" in the server, particles become grey squares in the clients. And when I puts "Effect" in the clients, the server does not see particles...