Render symbols (or images) with display set "cache as bitmap" possible?

Hi people,

A question;

I have like 12 symbols on the stage. They al have images in them in JPG format, saved at a quite low percentage in quality.

The symbols are being animated seperately but it looks very sluggish.

I am recreating a whole Flash site in Edge. Everything works (amazing) fine except I am missing the function like it exists in Flash:

“Display/ Render/ cache as bitmap”. (see image)
This function used to help me BIGTIME in Flash too.

Now how can I do something similar in Edge?

I do not want to animate all symbols as 1, it is essential they are animated separately.
Is this possible in Adobe Edge Animate? Is there something similar in Javascript/ Jquery?

Thnx in advance!

Lester.