Do Orphaned Tasks Slow Down Asana?

I noticed some inefficiencies in how our team is using Asana. One big pain point is orphaned tasks and subtasks. We have a ton of them. My question is - does this have any impact on general Asana performance? I believe the answer is Yes when talking about Advanced Search speed (a few projects have so many - over 6k open + unassigned tasks - that trying to load more crashes Asana).