diff --git a/config/training/dqn-hyperopt.toml b/config/training/dqn-hyperopt.toml
index 41e140eb6..0bcecc5ca 100644
--- a/config/training/dqn-hyperopt.toml
+++ b/config/training/dqn-hyperopt.toml
@@ -20,7 +20,7 @@ v_range = [10.0, 50.0]                 # symmetric: v_min=-v_range, v_max=+v_ran
 noisy_sigma_init = [0.1, 1.0]          # log scale in adapter
 dueling_hidden_dim = [128, 512]
 n_steps = [3, 5]
-num_atoms = [11, 101]                   # 11=RTX3050, 51=H100 default, 101=max
+num_atoms = [11, 51]                    # 11=RTX3050, 51=H100 default (101 is 2x slower for marginal benefit)
 
 # Weight decay
 weight_decay = [0.0001, 0.01]          # log scale in adapter
@@ -36,7 +36,7 @@ volatility_window = [10, 30]
 tau = [0.005, 0.01]                    # log scale in adapter
 
 # Network sizing
-hidden_dim_base = [128, 512]           # capped: backtest evaluator is O(bars × dim²)
+hidden_dim_base = [128, 256]           # capped at production default: 512 is 4x slower for marginal benefit
 
 # CQL regularization
 cql_alpha = [0.0, 1.0]