diff -r 7188ed142481 -r 894f58f5b59b hgext3rd/evolve/stablerange.py
--- a/hgext3rd/evolve/stablerange.py	Wed Sep 25 19:43:02 2019 +0200
+++ b/hgext3rd/evolve/stablerange.py	Wed Sep 25 19:43:19 2019 +0200
@@ -212,6 +212,10 @@
 commit time and to exchange them alongside the revision over the network. This
 is similar to what we do for other cached data.
 
+It is also important to note that the smaller ranges can probably be computed
+on the fly instead of being cached. The exact tradeoff would requires some
+field testing.
+
 Performance
 -----------