performance is legions better, so now you can work on gameplay mechanics :3 it appears that you fixed the bullet lag, and bullets seem to be working properly your wall collisions are still off it appears that you actually gain velocity after hitting a wall it looks like you temporarily set velocity negative, and then resume to modified original velocity if you fly next to a wall, with no thrust you can watch the ship oscillate next to the wall dx7 has a rendering defect in fullscreen the bg is rotating as well, and the picture you use is a rectangle, so there are parts of the screen not covered by the bg rectangle the picture may be resized screenshot taking doesnt seem to work anymore cant use opengl sometimes, throws "windows exception"s got int div by zero, something else and then it works other times