i don't know about you but most of this stuff has never happend to me, my game has never freezed or crashed and im on laptop and it has never been buggey or lagged in floating fertility temple.
About the bugs you mentioned with the debug room and the teleporter, was the message "Failed to load angel_5.png" or something similar.
If it is, then the glitch is a memory issue that exist since the last patch. Basically certain saves spot (I don't which one for this version) don't work properly, and when the save file becomes too heavy, the game won't be able to laod certain ressources (character's faces in dialogs in that case)
as for the crashes, it's either the same glitch or just a memory issue. A possible fix could be moving the game on a separate drive to free some space on your computer
Edit: Also I forgot to mention that the birth menu was glitched in this version and that only the birth+ option appears (200 power)
Well, it really depended on how much you screwed with the game to glitch it.
Right now, the majority of the glitch are link to the freedom given to the player during the story line (Like being able to enter the pyramid right after reaching the neko village instead of waiting to complete the royal city first).