diff --git a/av1/encoder/speed_features.c b/av1/encoder/speed_features.c
index d57fb43..083b4de 100644
--- a/av1/encoder/speed_features.c
+++ b/av1/encoder/speed_features.c
@@ -669,6 +669,9 @@
 
     sf->tx_sf.tx_type_search.winner_mode_tx_type_pruning = 2;
     sf->tx_sf.tx_type_search.prune_tx_type_est_rd = 0;
+    // Use largest txfm block size.
+    sf->tx_sf.intra_tx_size_search_init_depth_sqr = 2;
+    sf->tx_sf.intra_tx_size_search_init_depth_rect = 2;
 
     sf->rd_sf.perform_coeff_opt = 6;
     sf->lpf_sf.cdef_pick_method = CDEF_FAST_SEARCH_LVL4;