diff --git a/src/anemoi/training/config/diagnostics/callbacks/rollout_eval.yaml b/src/anemoi/training/config/diagnostics/callbacks/rollout_eval.yaml
index 1552e02c..d08c2659 100644
--- a/src/anemoi/training/config/diagnostics/callbacks/rollout_eval.yaml
+++ b/src/anemoi/training/config/diagnostics/callbacks/rollout_eval.yaml
@@ -1,4 +1,4 @@
 # Add callbacks here
 - _target_: anemoi.training.diagnostics.callbacks.evaluation.RolloutEval
   rollout: ${dataloader.validation_rollout}
-  batch_frequency: 100
+  batch_frequency: 20