Android fast rss/atom parsing

I'm looking for a fast way to parse an RSS and Atom feed (the source changes periodically). I tried different approach:

1. Writing my own parser: I made a very fast one using SAX

   • Problem: Most of the time the feed is full of non standard tags like <content:encoded> and the parsing miss the most important informations.

2. Using a third party lib: I tried many libraries and the only one so far reading all the feeds i throw at it is ROME

   • Problem: Most of those libs (and especially ROME) are way too slow on the device (4-5x !!)

Any idea on how to speed this ? Is it even the best approach ?