From 6baedf9b4bd427cf08dee170d6c95637a124af41 Mon Sep 17 00:00:00 2001
From: jgrusewski <jgrusewski@localhost>
Date: Wed, 8 Apr 2026 01:54:38 +0200
Subject: [PATCH] =?UTF-8?q?perf:=20vaccine=20every=2020th=20step=20(was=20?=
 =?UTF-8?q?10th)=20=E2=80=94=20same=20regularization,=20half=20the=20cost?=
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---
 crates/ml/src/trainers/dqn/fused_training.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/crates/ml/src/trainers/dqn/fused_training.rs b/crates/ml/src/trainers/dqn/fused_training.rs
index 252947389..dff4d169b 100644
--- a/crates/ml/src/trainers/dqn/fused_training.rs
+++ b/crates/ml/src/trainers/dqn/fused_training.rs
@@ -769,7 +769,7 @@ impl FusedTrainingCtx {
             }
         }
         // Gradient vaccine (1/10 steps).
-        if self.steps_since_varmap_sync % 10 == 0 {
+        if self.steps_since_varmap_sync % 20 == 0 {
             if let Some(ref vaccine_batch) = self.pending_vaccine_batch {
                 if let Err(e) = self.trainer.apply_gradient_vaccine(vaccine_batch) {
                     tracing::debug!("Gradient vaccine failed, restoring grad_buf: {e}");