In general about your crashes, experiment with the following:
- (de)activate ENBoost, OSAllocators and/or OneTweak
- make sure no other mods are installed or activated
- let steam
verify your game files
- don't use ALT+TAB during loading screens to change to another window-->it can take a while for the game to load and it might even seem unresponsive (cursor becoming a circle)
- change the preferences in the launcher (don't play on full ultra settings), make sure that CPU and RAM usage in the “optimisations” tab are on max
You can also send us a savegame.
They're found in ...\Documents\My Games\Enderal\Saves
We'll need the *.ess and the *.skse file.
Best a manual save (no auto or quicksave).
Pack both to a zip or rar archive (the forum doesn't accept *.skse).
Regardless of that: you don't need to have Skyrim installed for the Steam version of Enderal.