Seems to work great with no major delays or anything like that in Finnish DVBC.
I can't even see any green outlines someone mentioned in this thread - maybe I've different rendering options in use?
About those green outlines, those are hard to spot. Take a screen shot and use some image viewer to zoom in
Also there aren't that many people who have submitted test streams, but I guess that's why it's working better for Finish DVB
Here's the first public test version of the DVB subtitle filter:
http://day2.no-ip.org/DVBSub_test_01.zip