diff --git a/src/tactic/portfolio/parallel_tactic.cpp b/src/tactic/portfolio/parallel_tactic.cpp
index 999dbc2e0..bc28a7b37 100644
--- a/src/tactic/portfolio/parallel_tactic.cpp
+++ b/src/tactic/portfolio/parallel_tactic.cpp
@@ -443,8 +443,9 @@ private:
         // extract cubes.
         cubes.reset();
         s.set_cube_params();
+        unsigned cutoff = UINT_MAX;
         while (true) {
-            expr_ref_vector c = s.get_solver().cube(vars, UINT_MAX); // TBD tune this
+            expr_ref_vector c = s.get_solver().cube(vars, cutoff);
             if (c.empty()) {
                 report_undef(s);
                 return;
@@ -618,6 +619,11 @@ public:
         return pp.conquer_batch_size();
     }
 
+    bool filter_cubes() const {
+        parallel_params pp(m_params);
+        return pp.filter_cubes();
+    }
+
     void cleanup() {
         m_queue.reset();
         init();
diff --git a/src/tactic/smtlogics/parallel_params.pyg b/src/tactic/smtlogics/parallel_params.pyg
index 70c4ccdd0..58da305f4 100644
--- a/src/tactic/smtlogics/parallel_params.pyg
+++ b/src/tactic/smtlogics/parallel_params.pyg
@@ -7,4 +7,5 @@ def_module_params('parallel',
                           ('conquer_batch_size', UINT, 1000, 'number of cubes to batch together for fast conquer'),
                           ('inprocess.max', UINT, 2, 'maximal number of inprocessing steps during simplification'),
                           ('restart.max', UINT, 100, 'maximal number of restarts during conquer phase'),
+                          ('filter_cubes', BOOL, False, 'filter cubes using a short running check'),
                           ))