Okay, I'm here looking for a Premium Membership so here goes.
This guide is easy, all you need is a timer. In-game Stroper Chyme spawns, doesn't matter whether you get claim or not. Wait and see what time the mob disappears. EXACTLY 5 hours later GAME TIME, about 12 minutes earth time, the mob will respawn in the general area. There are 3 areas that Stroper Chyme spawns, but it's hard to cover all 3 rooms with 1 person. I recomend getting time on 1 room, checking the next room, and coming back when its about to spawn in the first room.
Hope ya'll enjoy
-Hertel