Heyy!!! Just saw your video and I really enjoyed watching it.
Regarding the lag that you faced in the early areas, there is a patch that we will deliver by the end of this week to address the optimisation issues. For the underground puzzle, let me drop a hint. There was a place with a lot of shelves and a binary code written on the wall. I guess that hint is enough for you to solve the underground puzzle.
Would love to see you try again !! 