In my recent 2.0 runs, I switched over to playing with the Norwegian voice lines just for fun.
However, I think it may end up saving time. I haven't done exact time comparisons, but I noticed in my recent runs that used the Norwegian voice lines, I seemed to save around 10-13 seconds in Birthday from the dialogue being a little faster.
This may end up not impacting the speedrun a whole lot, but I wanted to post it here in case something more comes of it.
13 seconds is quite a bit for a language swap. Makes me also wonder about lower fps being faster in some areas. (An older computer i did runs on had better prop launches)
The estimate was rough, which is why it's so high lol
I may take a further look by comparing the time on my best Birthdays on English and Norwegian
I'll look into the framerate thing. If anything 45fps might be strangely faster for 2.0 (that or i just lost my edge)