Audacity project slow

Hi everyone, I am going crazy with a small but annoying problem

Mid-way through editing, suddenly audacity slows down and every change takes a few seconds to make, even very small one, multiplying the work. If I save the project as an MP3 and then re-upload on audacity, the problem is usually gone.

Do you have any idea how to fix it?

Same thing just happened to me. Saving a new file and creating a new project worked for me as well. I think it has something to do with Audacity not being able to handle a large number of edits in a project file. If I remember correctly this bug has been around for a while, but I could be wrong…