Long loading occurs when trying to paste in the latest version (20.5v)

This is a problem in the latest version of 20.5v of Animate CC.

When I copy and paste a symbol or object, a lag occurs.

From the previous version, there was a loading time when copying and pasting symbols with many original frames, but there was no loading when copying and pasting regular objects.

However, in the latest version, when I copy and paste a light symbol or a single object, a lag occurs.

After testing, the more objects in a project, the longer the loading time when trying to paste.

When copying a simple image using Alt, I have to wait too long for loading. This is very inefficient.

I don't know why this suddenly happened,
We hope that optimization will be done as soon as possible.