The itch.io version runs a significantly older version of the engine and lacks much of the functionality of the Patreon version. In addition, place-shifting / downloading content is significantly slower as a result.
If your interested in getting the latest versions and updates which do not have these issues, yes, please do consider supporting me on Patreon. Standard level supporters and above can get access to all the latest news, new features, subtitle definitions, and special Patreon versions as they are released! (See "README.txt" for more details).