big speed hit ...

it's not the reason, it seem that drawing operation to an imagebuffer is wayyyy slower than a drawing operation to mainscreen buffer
as i added in the code the drawimage command to check if it's why i have an as big speed hit

also, note that i do 100 time the copyrect stuff and just 1 more drawing operation in the second example, so the speed hit would be 1 percent more...

Graphics 800,600,32,0
miror=CreateImage(800,100)
Dim x(100),y(100)
For a=0 To 100
x(a)=Rand(800)
y(a)=Rand(400)
Text x(a),y(a),"this is a test"
Next
Repeat
Cls
For t=0 To 100
x(t)=x(t)+Rand(5)-3
y(t)=y(t)+Rand(5)-3
Text x(t),y(t),"this is a test"
Next
DrawImage miror,0,500
For a= 1 To 100
	CopyRect 0,400+a,800,1,0,600-a
Next
Flip
Until KeyDown(1)