diff --git a/values.yaml b/values.yaml
index e7c32f9..51e96fb 100644
--- a/values.yaml
+++ b/values.yaml
@@ -231,9 +231,42 @@ env:
     value: "sientia"
   - name: MINIO_RETENTION_HOURS
     value: "24"
-  - name: SIENTIA_MINIO_OFFLOAD_THRESHOLD_MEGABYTES
+  - name: SIE_MINIO_OFFLOAD_THRESHOLD_MEGABYTES
     value: "1.5"
 
+  # Temporal worker tuning for PredictionsBatch.
+  # IMPORTANT: prefix must be PREDICTIONSBATCH_ (from class name PredictionsBatch).
+  # Keep workflow-task concurrency moderate to reduce task completion races under load.
+  - name: PREDICTIONSBATCH_MAX_CONCURRENT_WORKFLOW_TASKS
+    value: "20"
+  # Allow higher activity parallelism because most activities are I/O-bound, but keep headroom.
+  - name: PREDICTIONSBATCH_MAX_CONCURRENT_ACTIVITIES
+    value: "60"
+  # Keep local activities controlled so they do not monopolize the event loop.
+  - name: PREDICTIONSBATCH_MAX_CONCURRENT_LOCAL_ACTIVITIES
+    value: "20"
+  # Cache enough workflows for reuse without excessive memory growth.
+  - name: PREDICTIONSBATCH_MAX_CACHED_WORKFLOWS
+    value: "200"
+  # Start with one workflow poller to avoid burst contention at startup.
+  - name: PREDICTIONSBATCH_WORKFLOW_POLLER_BEHAVIOUR_MINIMUM
+    value: "1"
+  # Small initial poller count warms up gradually instead of spiking task fetches.
+  - name: PREDICTIONSBATCH_WORKFLOW_POLLER_BEHAVIOUR_INITIAL
+    value: "2"
+  # Cap workflow pollers to limit scheduling pressure and avoid over-polling.
+  - name: PREDICTIONSBATCH_WORKFLOW_POLLER_BEHAVIOUR_MAXIMUM
+    value: "10"
+  # Keep at least two activity pollers so activity queues do not starve during spikes.
+  - name: PREDICTIONSBATCH_ACTIVITY_POLLER_BEHAVIOUR_MINIMUM
+    value: "2"
+  # Moderate initial activity pollers for faster ramp-up with controlled pressure.
+  - name: PREDICTIONSBATCH_ACTIVITY_POLLER_BEHAVIOUR_INITIAL
+    value: "5"
+  # Limit max activity pollers to preserve CPU for workflow-task completion.
+  - name: PREDICTIONSBATCH_ACTIVITY_POLLER_BEHAVIOUR_MAXIMUM
+    value: "20"
+
   - name: PI_WEB_API_BASE_URL
     value: "https://pivision.votorantimcimentos.com/piwebapi"
   - name: PI_WEB_API_AUTH_TYPE