Animate lagging while running animation

Over the past few days, whenever I try and playback my animation on Animate (which I have set to 24fps) the framerate drops, sometimes to 16fps or even 12fps. I've been using it for 10 months on my current computer, and I haven't had this happen before. I tried ruducing the number of tabs I had open so I had fewer tabs open then I did when it ran fine. I also tried restarting my computer, and niether of those worked. I would really like if someone could help me fix this, because I'm supposed to be working on an animation portfolio.