Adobe Animate is lagging and performing slowly

Did you ever get this figured out?

Try Scaling down your timeline to where you can only see one layer. It increases your FPS and performance quite a bit. When the timeline is at the default size or larger then the FPS and perfomance drops significantly.

Hope this helps
Jason
 

Usually 2D or 3D animation applications never reproduce the animations completely, it is always better to take a video export to see them in detail.

Also Animate tends to run slower on Hi-DPI screens and doesn't run natively on Arm yet, It's a known issue that Adobe is working on.

The frame rate in Animate is merely a target rate - the more we throw at it graphics and animation-wise, the slower the potential playback will be. This means any large movements, complicated vectors, multiple objects moving at the same time and playing back at a large screen size, will contribute to a slower performance.

Things to try:
View > Preview Mode > Fast
Crop the stage
Scale down the viewable stage size to be smaller in your monitor. You'll see pplayback increase as the stage gets smaller becuse it's less taxing on the GPU. Animate is a vector based application and not really a fixed-frame format like After Effects or a video editor. You are using un-rendered assets and that requires GPU speeds to calculate real-time frame rates during playback. Also, masks are a resource hog also and will slow down playback speed.

You can always export a video (MP4) to see how it plays at the true frame rate you st the document at.

Make sure your computer meets the requirements for adobe animate.

https://helpx.adobe.com/animate/system-requirements.html