Can you share any saved composition with us? Also, if you are getting any crash/error logs then please share those too.
I already found cause of this problem.
When you import SVG to Edge Animate it gives your SVG width and height 10 times more then original size of image and transform: scale(0.1). So when you import 5 SVG images 500x500 Adobe Edge makes them 5000x5000.
So that's cause app freezing and bad SVG displaying in browsers.
Always change scale(0.1) to scale(1) and reduce size from 5000px to 500px for example.
That's great. This behavior is changed in the CC 2014.0.1 update that we posted yesterday for any new content that you create. Meanwhile, you can try the update and let us know if you still have this issue. For the content which are already created in CC 2014, there will still be a manual process involved. We are in the process of posting more details about the same.