a lot of weebs meme on about how funimation had silly voices for Наруто or w/e but I've seen quite some horrors in the land of subs, it can be quite a shitshow. The translation could be wrong, the dialogue could disappear seconds earlier than natural reading speeds (relative to good subs), the subs could play at a faster or slower rate than the video (so you have to adjust the offset every 2-5 minutes), the subs could be internally wrongly paced, or for a different cut, they might cover hardcoded subs that you needed to be able to read.