diff --git a/card_game/src/lib.rs b/card_game/src/lib.rs
index 40193da..6d6727a 100644
--- a/card_game/src/lib.rs
+++ b/card_game/src/lib.rs
@@ -410,7 +410,8 @@ where
 		let mut state_moves = std::collections::HashMap::with_capacity(HUGE_CAP);
 		let mut state = self.clone();
 		while !state.is_win() {
-			if HUGE_CAP <= state_moves.len() {
+			// don't look for empty hash map buckets when the hash map is 99% full!
+			if HUGE_CAP * 127 <= state_moves.len() * 128 {
 				return Err(Oom);
 			}