I have been having a great deal of trouble switching over to OS X.

The following handler illustrates my problem:

on mouseUP
  set the loc of grc "ball" to 100, 100
  put .1 into dx
  put .1 into dy
  put the loc of grc "ball" into tBallLoc
  repeat 5000
    add dx to item 1 of tBallLoc
    add dy to item 2 of tBallLoc
    set the loc of grc "ball" to tBallLoc
    --wait 1 millisec
  end repeat
  set the loc of grc "ball" to 100,100
end mouseUP

In OS 9, this causes the ball graphic to slide smoothly along a 45 degree line. In OS X the ball moves erratically to two or three spots on the line and then quickly back to the starting location.

(Since the loc consists only of integers, this should move the ball smoothly through points 100,100 to 101,101 to 102,102 ... 600,600.)

If I insert the "wait 1 millisec" the motion is smooth, but slow. It takes, of course, 5 seconds plus.

Is this a known problem in OS X?

I am running RR 2.2.1 and OS X 2.3 on a PowerBook G4

Jim
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