canvas.DrawString() causes lags and then kernel panic.

[NikkyHika]

In my OS, because of drawString() inside Run(), lags start and then it crashes with a kernel panic error. Now I'll give you the code:

BeforeRun() {
pen = new Pen(color.White);
font = PCScreenFont.Default;
// and everything else
}
Run() {
canvas.Clear(Color.DarkCyan);
canvas.DrawString("Hello world!", font, pen, 30, 30);
canvas.DrawImageAlpha(cursor, (int)MouseManager.X, (int)MouseManager.Y); // for in order to find out the problem
canvas.Display();
}

Help please.

[ADev531]

the graphics system usually makes a bunch of lags, so i recommend putting Heap.Collect(); after canvas.Display();. also not must, but i recommend using devkit.