I'm trying to get every achievement before the release of Iceborne on PC. And, I'm sure you guessed it, the only ones left on my list are "Miniature Crown Master" and "Giant Crown Master".
I've gotten a fair chunk of gold crowns so far (both small and big) and doing the event quests (Coral Waltz, Deep Green Blues...) aren't really worth it anymore.
I've heard that you need investigations with at least one silver and one gold reward to have a chance to spawn a gold crown monster. Is it true? Are there any more investigation parameters I should be on the look out for?
Basically, is there any way I can manually filter my investigations to find ones that have a (higher) chance of gold crowns?