Please follow this guideline when posting bug reports. Here is what I need from you:

First off, go check your log file at Documents\My Games\Skyrim Special Edition\SKSE\AlchemyOfTime.log,
it might be something obvious. Maybe your presets are incorrectly configured.

Then open a bug report and tell me exactly what happened how it happened and whether it is reproducible.
Send me the log file of the mod (see above) and the crash report (if you crashed) and whatnot via pastebin or similar.
Tell me also your game version if not included in the crash log.
From then on I will do my best to help you.