Pony Island language timing comparison
Bad news is, english is still fastest in any% (and I would assume so for no-skip and ticket%)
Other than having to type different words in the texts prompts, one notable difference in gameplay is that you don't have to rebuild the hidden option to get the laser in any other language than english.
Russian isn't shown because I had recording issues when I did it. Seeing as it's one of the slowest languages and I couldn't complete any text prompt due to letters I couldn't find even with unicode. I decided it wasn't worth to re-record.
When going for individual levels, here's the best languages:
Intro: Polish / Turkish
Act 1: Danish
Act 1 Boss: Doesn't matter
Act 2: ???
Act 2 Desktop: ???
Act 2 Boss: English
Act 3: English
Act 3 Desktop: Turkish
Act 3 Boss: English
Final: Doesn't matter
It also seems that it's not worth it to change language mid-run. Changing languages would need to take less than 2 seconds. Here's my Shortest Path Solver spreadsheet to show that. https://www.dropbox.com/s/4dn2aq7m1mxb0uk/Pony%20Island%20Shortest%20path%20solver.xlsx?dl=0
If you wanna tinker with it, you'll need the https://opensolver.org/ add-in as there are too many cells for Excel's built-in solver.
Music is from Pony Island itself: "Beelzebub" and "Escape"
by Jonah Senzel https://jonahsenzel.bandcamp.com/releases
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