1.03 Game still crashes. either by playing normally or speedrunning dialogue by pressing ctrl and d. So it seems cause is still random. Personal anecdotal evidence though: my game did not crash for hours (3 or more) in patch 1.02 even when running on full screen (It was disabled if you alt enter but you can full screen by pressing f1 and launching the game in fullscreen and restarting the game). So yeah if you're lucky the game will not crash but with the fickle nature of this game it is more than likely to crash than not.
That aside FCK the combat of this game even normal mobs are lethal as shit and scales with the player level so it will always be hard (even the starter areas) + skill learning RNG and item drop RNG can either drop worthless stuff or gamebreaking/endgame stuff/consumables. Another thing to note is how out of place the monster groping in battle. Like a skeleton and a dragon will grope with green hands (I know it's to recycle asset and save time) but in the first place why are there leveled dragons in the beginner area and why are all monsters so insistent on groping even though they are not humanoid and doesn't seem to have nasty intentions on the heroines. Such a tacked on mechanic.