Picture Rotation Lag

[Ascare]

Hi
I've tried to rotate a picture that covers the whole screen. But it lags, even on low speed.
It's a 928x928 picture on a 640x480 map. I thought it may be lagging because of the picture size, but when I zoom the picture to 50% or 25% it's not lagging even a bit.
I have also tried to take a small picture (320x240) and zoom it up to 400% but then it lags too.
What I've also tried is to rotate the pic via ruby (sprite.angle), same lag problem.
Oh and the event is just two lines started wih action trigger: Show Picture 1, Rotate Picture 1 Speed 2.

Summary:
Picture size doesn't seem to matter, even if it's a little pic...when it covers the whole screen, the fps go significantly down.
Any suggestions how to get a picture that covers the screen not to lag? :blank:

 

[Brewmeister]

Using the angle property of the sprite is just doing manually what the event command does. (Sprite_Picture, line 69)

From the Doc:
angle

• The sprite's angle of rotation. Specifies up to 360 degrees of counterclockwise rotation. However, drawing a rotated sprite is time-consuming, so avoid overuse.

You could check the SDK/MACL to see if Trick included a rotate method for the Bitmap class.

Or, try making an animation using your picture.