Lost Colony rewards planning: bounce between objectives without a loop and the map eats time, but repeat the right objective with the right gear and it becomes a progression engine. There are no guaranteed drops here - treat every route as a loop to test against your cluster, patch and tribe size.
#Best loop for Crimson Sigils
Pick the loop with the least dead-time for your current gear. A slightly slower objective that resets cleanly can beat a harder one that forces repairs, travel or repeated failures.
