I have purchased and am working with my new A7S3. Although 4K video seems to work, it takes a long time to render. I have stepped back to using the HD setting. I encountered Green screens when trying to view and edit these files. I read that you must uncheck :Enable legacy AVC decoding, and Enable legace HEVC decoding in order to work with the new 10 bit HD files. This has worked in the editing phase, but rendering a 6 minute video doesn't work. I freezes mid way. I have had to render in 2 minutes segments, and then stitch the renders into a final version. Does anyone else have the same experience? What is happening here, and is there a fix for this?