diff --git a/src/main/java/org/broadinstitute/hellbender/utils/pairhmm/VectorLoglessPairPDHMM.java b/src/main/java/org/broadinstitute/hellbender/utils/pairhmm/VectorLoglessPairPDHMM.java
index 968de005b02..e05df4b16cc 100644
--- a/src/main/java/org/broadinstitute/hellbender/utils/pairhmm/VectorLoglessPairPDHMM.java
+++ b/src/main/java/org/broadinstitute/hellbender/utils/pairhmm/VectorLoglessPairPDHMM.java
@@ -24,7 +24,7 @@
 public final class VectorLoglessPairPDHMM extends LoglessPDPairHMM {
 
     //TODO what should this size be? make this configurable
-    private final int GKL_COMP_BATCH_SIZE = 1000;
+    private final int GKL_COMP_BATCH_SIZE = 50;
 
     /**
      * Type for implementation of VectorLoglessPairHMM