Thanks for this.
I am not sure what is causing this lagging and crash. 280 frames and only one layer shouldn’t be a problem at all. That your file is 628 mb (quite large actually), tells me something is going on. So for some reason data is piling up. It could be because of lasso use, even though it doesn’t sound like you used it that much.
How much free memory do you have? I mean, if your computer is running low, then it could begin to swap, which could maybe explain the lagging.
I’m just guessing here. You are welcome to (once again) send me your ap-file, so we can examine it. And please get back to me with more specs on you computer, especially how much memory (RAM) you have.
Thanks a lot,