Why does the delay in an applescript editor increase by itself?...***

Question

so im trying to write myself a (very simple) auto typer for an mmorpg i play. i found a script for such an application on http://www.sythe.org/archives/438387-how-make-your-own-mac-auto-typer.html and proceeded to edit it for myself. the problem im having is that the delay is set to 3 for every line, but for **** sake, it just keeps slowing down after about a dozen lines. i have tried shortening the application to only 10 lines, and then clicking the continue button, but upon clicking the continue button it simply keeps upping the delay... WHY THE **** MUST YOUR EDITOR NOT WORK APPLE?!?!?!?!?!
and when i had the application set to do about 30 lines, again the frequency of the typing would significantly decrease after it typed my message about a dozen times. my script is as follows:
tell application "System Events"
          set texttosay to "Sample Text"
  display dialog "Text to say:" default answer ""
          set texttosay to the text returned of the result
          repeat
                    activate application "Old School RuneScape"
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
  delay 3
  keystroke texttosay
  keystroke return
                    display dialog the "Do you want to quit?" buttons {"Continue", "Quit"} default button 1
                    if the button returned of the result is "Quit" then
                              exit repeat
                    end if
          end repeat
end tell

Answer 1

try it this way: save the following as an application (not as a script) and run it.
property texttosay : "Sample Text"
on run
  display dialog "Text to say:" default answer ""
          set texttosay to the text returned of the result
end run
on idle
          tell application "System Events"
                    if frontmost of process "Old School RuneScape" is false then
                              set frontmost of process "Old School RuneScape" to true
                    end if
  keystroke texttosay
  keystroke return
                    return 3
          end tell
end idle
this solves a couple of problems:
it keeps the script from constantly trying to activate the OSR app
there's no context shift from system events to OSR; the app is activated by system events itself
is removes the delay commands and replaces them with a 3 second idle loop. an idle loop puts the app to sleep while a delay command merely halts the execution of the script. the former is much more efficient fromt he processor's perspective.