Well, I don't get a solution using AutoRepaint = False .....

but I've tested the T6 and T7 and with T6 the problem still happend
with T7 the problem disappeared!

p.s: The problem is not the number of points ploted, but the number of charts that I try to plot in the screen.

I have the same problem, and I use Teechart 5.03 with Delphi7. Is this your case?

I'd like to know if this problem have a solucion in another version of TeeChart.