55.6 frames per second

[bplus]

Do you know about Interference patterns?

When the program is binking a screen at one rate and the screen hardware updates at a different rate you are going to develope interference patterns which will look like stutters.

Look here at all stutters in the yellow box:

Code: (Select All)

Screen _NewImage(1200, 600, 32)
_ScreenMove 50, 60
For i = 1 To 100
    r1 = r1 + 13
    r2 = r2 + 5
    Circle (300, 300), r1
    Circle (900, 300), r2
Next
Line (300, 280)-(900, 320), &HFFFFFF00, B

You can get a really sweet pattern of regularity if the two rates are mutliples of each other like so:

Code: (Select All)

Screen _NewImage(1200, 600, 32)
_ScreenMove 50, 60
For i = 1 To 100
    r1 = r1 + 4
    r2 = r2 + 8
    Circle (300, 300), r1
    Circle (900, 300), r2
Next
Line (300, 280)-(900, 320), &HFFFFFF00, B

So a solution would be to fine tune the times you CLS to your hardware refresh rate.