diff --git a/config/gpu/h100.toml b/config/gpu/h100.toml
index 60b2210dd..caa17e1ac 100644
--- a/config/gpu/h100.toml
+++ b/config/gpu/h100.toml
@@ -4,7 +4,7 @@ batch_size = 8192
 num_atoms = 51
 buffer_size = 500000
 hidden_dim_base = 256
-replay_buffer_vram_fraction = 0.70
+replay_buffer_vram_fraction = 0.55  # Reduced from 0.70: state_dim grew 88→96, 86 weight tensors
 
 [experience]
 gpu_timesteps_per_episode = 5000