Considering how difficult it might be (and identifiable) to attempt direct exploitation of this without being sure your target is vulnerable, it’s plausible the

Considering how difficult it might be (and identifiable) to attempt direct exploitation of this without being sure your target is vulnerable, it’s plausible the performance issue allowed for an identifiable delay in attempts. This might be useful in determining whether to attempt the exploit, with an auto-skip if it received a response in less than N milliseconds.