the load remover/auto splitter should appear on livesplit when you type "Maid of Sker" into the "Game Name" section
I'd say no to restart saving before a death as it would interfere with the IGT and thats the main timer we go off for submissions. and as far as im aware there is a debug menu for the game but requires Cheat Engine to run as its a CE Table which activates it which is located -> https://fearlessrevolution.com/viewtopic.php?t=13239
As of a recent patch the IGT now removes load times in the game so after testing weve decided to make IGT an allowed timing method for the PC categorys (console was IGT already)
Currently our Livesplit load remover isnt working with current patch so this allows runs to be still uploaded to the boards without major time differences to current runs since IGT will now keep up with the load remover.
Could be streamlabs chugging your cpu and dropping your fps lower since AI is a cpu heavy game and if your fps drops out of range you won't be able to clip through doors.
I used to have this problem on my old pc, I started using obs and dropped my graphics down to lowest which fixed it, to find out the problem see what your fps is when clipping with and without streamlabs running