Preview Buffers

When I play in the preview window, the image buffers. If I play again after watching buffering view, it works normal.

Animation crashes when playing an animation on the workspace.

Synfig 1.3

When we “preview”, it takes time to load all the frames especially if you have set the higher quality. Therefore, I set a little bit low quality and then wait for it to load.

You are using Synfig 1.3 which is a development version. It crashed for me sometimes. Therefore, I suggest you to use stable version instead.