anything that runs 100 times per second causes heavy lagsI created trigger with periodic event (every 0.01s.) with 2 'ifs', and 2 'for' loops. It was lagging like hell.
Of course it's not always ok.
It depends on number of actions in those triggers. For example, yesterday I created trigger with periodic event (every 0.01s.) with 2 'ifs', and 2 'for' loops. It was lagging like hell.
Remember about other players which can have worse computers. Try to optimize your triggers as strong as you can. Always turn off your periodic triggers when they are not longer usefull.