Hello there! For one of my multiplayer mission, I'd like to have blinking lights from different lightsources (static ones, no vehicles). I'm planning to have a lot of them (50+), and some may be blinking fast (up to 20x / second). I totally don't care about the lights synchronization for the players. This is mainly to create a mood. So a client-side effect command would be perfect. Until now, I was using something like this to make a lamp blink: _lamp setHit ["light_1_hitpoint", 0.97]; sleep 0.1; _lamp setHit ["light_1_hitpoint", 0]; Problem is, this command is broadcasted over the network. Multiply this by 50 lamps, a mission of ~20 players, and here's my question : will this ruin data exchanges between the server & the players ? I'm afraid of building something that works for me when testing, but is unplayable for my community due to performance issues. Should I expect a huge drop on FPS / Synchronization, & if yes, is there an alternative command with local effect only, to ensure a minimum performance penalty ? I searched in the wiki, but everything that was resolving around setting damage is broadcasted over the network. Thanks a lot for your ideas !