Oh i see what the issue is, you're supposed to jump on top of the wall after the boxes, i thought the player would just drown if they go through the water, but if you're fast enough you can actually fall off the map.
If you go on top of the wall you'll trigger the scene transition, sorry about that!
I didn't have any lagging issues on the devices i tested, could you share you hardware specs? Also the story is real, and i was living it while developing this, which is why i had to leave it so bare bones. Ty for playing!