CPU usage increases over time

 
I have an indicator that increases CPU usage over time. At first less than 5%, some hours later 10%, and one day later it's at 50%. Any idea of what is causing it?
 
Jasus5457:
I have an indicator that increases CPU usage over time. At first less than 5%, some hours later 10%, and one day later it's at 50%. Any idea of what is causing it?
Sorry - my scrying crystal ball fell down and the new has not yet arrived but meanwhile the code would help (please use the SRC-button).
 
Because it redraw the indicator for all Bars at each tick, probably.