OK, the file you are trying to convert is already as small as it is going to get.    This from fileinfo.com:  Before 2007, OGG files were used to store various types of media, but since then the Xiph.Org Foundation recommends that OGG files store only audio data. Now, you will most likely encounter only OGG files that store audio data compressed with Vorbis compression.

Since the file is already compressed the reason for your stuttering is that the player is trying to uncompress while playing and appears not to be powerful enough to do it smoothly.  I think what you should be doing is uncompressing the file into its full uncompressed file size, then the video player doesn't have to do the work any more. The actual uncompress work would be done by ffmpeg which will probably take a long time. Changing the scale might help, but trying to reconvert it to another format is just going to make it bigger every time and probably still stutter.

Since I've never tried to uncompress a video file, I don't know what the settings would be.  You have to do some googling to find that  ffmpeg uncompress video