Slightly change the downscaling to have a more visible effect.
TCEC position 8/5Qpk/8/8/8/r7/7K/8 b - - 0 56
info depth 30 seldepth 61 multipv 1 score cp -6 nodes 14876659 nps 2874716 tbhits 0 time 5175 pv a3a5 f7f3 a5g5 h2h3 h7g6 f3e4 g6f7 e4f4 f7g6 f4d6 g6f7 d6d7 f7f6 d7d8 f6g6 d8e8 g6f6 e8f8 f6g6 h3h4 g5h5 h4g4 h5g5 g4f4 g5h5 f8e8 g6h6 e8e6 h6h7 e6e3 h5h6 e3d3 h7g8 d3d5 g8f8 d5d8 f8f7 d8d7 f7f8 d7d5 h6f6 f4g5 f6h6 d5a8 f8f7 a8b7 f7f8 b7d7 h6f6 d7d2 f6h6 d2a2 h6f6 a2a8 f8f7 a8a7 f7f8 a7b8 f8f7
bestmove a3a5 ponder f7f3

And yet it still allows SF to find the wins
Mate in 33 8/2Q5/4K3/8/8/3kp3/5r2/8 w - - 0 1
info depth 30 seldepth 62 multipv 1 score cp 564 nodes 77779433 nps 3198825 tbhits 0 time 24315 pv c7d7 d3e4 d7d5 e4f4 d5c4 f4f3 e6e5 e3e2 c4c6 f3g4 c6h1 f2f8 h1e4 g4g5 e5d6 f8d8 d6e7 d8d4 e4e5 g5g6 e5e2 g6f5 e2e6 f5f4 e6f6 f4e3 e7e6 e3d3 e6e5 d4b4 f6d6 d3c3 d6c5 b4c4 c5e3 c3c2 e5d5 c4a4 e3c5 c2d2 c5b5 a4g4 b5b2 d2d1 b2c3 g4g8 c3f3 d1d2 f3f5 d2c3 f5d7 c3b2 d5d4
bestmove c7d7 ponder d3e4

bench: 8210360