Any time interacting with bees - mainly holding the beenests in my inventory or even in a shulker box crashes the realm within minutes. I was playing yesterday Dec 13 and was able to play in small 10 minute segments before my game would crash. I wans't sure if it just happened to be around midnight when realms usually need to go down for a few minutes or not. Ever since the bee update though, the realm has been super buggy.