What about the vanilla chests in OOO? Do they respawn if they have some items in them, after being opened? That being the opening act "triggering" the reset?
Secondly, how do enemies respawn in dungeons? For example, in OOO Sideways Cave houses a gargoyle in the last part, which was impossible to kill at level 3 (with Realistic Leveling), so I left the first 2 parts of the dungeon cleared. Do enemies respawn in those? Or just after all enemies are cleared?
Thank you in advance.
Sure, any chest that is set to respawn will do so whether or not theres something in it, even if you put it there.
Enemies will respawn whether you've killed them all or not, that Gargoyle will always spawn there though (at least one, sometimes two, at higher levels I think they/it spawn as Ancient Gargoyles instead).
Every three days gametime (by default, you may or may not have a mod or used the bash patch tweak to alter that -- I have cell respawns set to 1 day) cells will reset; containers marked to respawn will do so, enemies will respawn, static food items (but not clutter) will also respawn, as will plants, all drawn from the lists appropriate for your current level when the cell resets. The timer for when a cell will reset begins as soon as you leave it; if you reenter a cell before it resets, the reset timer will reset. And one more use of the word reset. Reset reset reset.
That's part and parcel for OOO, theres going to be a lot of areas you cant or at least cant fully clear until you're higher level. Even so, in general enemies will keep pace with you, in relation to OOO's mix of leveled and unleveled content.
Gargoyle related spoiler:
Spoiler Gargoyles are really, really susceptible to Frost magic