So after reading nearly ALL of this forum something is not very clear for me.

RTA is only for the PC version? If I use emu can I submit a run with IGT? Only PSXJin and Bizhawk are allowed? And a personal question of me, how bad is the RNG in this game apart from the elevator codes? Enemy spawns always seemed identical for what I remember.

If someone can clarify these little doubts thanks in advance.