diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index d45bc41..8ba5886 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -345,6 +345,7 @@
     // TODO(any): Experiment on the dependency of this speed feature with
     // use_intra_txb_hash, use_inter_txb_hash and use_mb_rd_hash speed features
     sf->enable_winner_mode_for_coeff_opt = 1;
+    sf->reduce_wiener_window_size = is_boosted_arf2_bwd_type ? 0 : 1;
   }
 
   if (speed >= 4) {