External subtitle delay is not working properly in OpenViX. I tried OpenATV and it works there. The fix is in their git.
This option is very handy, hopefully you can fix it too.
Code:
https://github.com/openatv/enigma2/commit/87d40f3cf4ebb59a73d07cceb908495add6a755a
Code:
https://github.com/openatv/enigma2/commit/94c76fdb66e4c05e981ee4ce93cb60cabb69a2d1
This option is very handy, hopefully you can fix it too.