Got it.
Looked in your project.
So, I saw some wrong things in the data. First is, you created 16 seasons, with 12 of them having blank data. Those blank seasons, you better delete. Though that not related to your error. And curious why you needed to create blank seasons to begin with. Maybe I can help, if there is issue.
As about the error, I see same trigger over and over, million entries. A repeatable trigger must be added only once. But I think something in your events add same trigger again and again.
Still, is my error too, because my code allows it. When able, I will write the triggers container not to allow two triggers with same name. And if event adds trigger with name that is already in container, it will replace the previous one, instead to add new entry. That should prevent this issue.
Now, cannot say when will publish the patch, but should be later today, or tomorrow.
Btw, your save data is only 9 kb, when I removed the junk data from it :D.
Thank you for feedback! And if you need further assistance after I upload my fix, contact me again.
Uploaded the new version.
Hopefully it fixes the issue for you.
Also, made a part that should fix save files made with older version. When you try to open such save file, it will load even slower than before. But once loaded, the data will be optimized and map transfer should be smooth, and when you save again, save file size should be normal.