This issue started happening today, but I remember someone else mentioning it. When previewing a large project in Debug View, some layouts are extremely slow, running at 1-5 fps.
Here is an example - the layout has 10 layers, but no sprites or other graphics. And even no event sheet!
If I remove just any one layer, FPS immediately improves to 90-100.
Also only the System page is slow, as soon as I click any object or any other tab, the FPS improves.
Like I said, this started happening today. I have been developing this project for the past year and the debug was always working fine..
Anyone knows how to fix this?