Optistruct hang in PRPDDM randomly when using DDM on 2 hosts

If I run a model on 2 hosts in our cluster it randomly hangs in phase PRPDDM. I can only control on which subcluster and with which hardwareproperties the jobs run. If I run the same job just on 1 host it runs. I use always the same model in order to get optistruct on two hosts in ddm mode running.

some generic information about the model

FINITE ELEMENT MODEL DATA INFORMATION :
---------------------------------------

  Total # of Grids (Structural)        :   9503019
  Total # of Elements Excluding Contact:   7370969
  Total # of S2S Contact Elements (3D) :    126903 (no internally created CGAPG)
  Total # of Rigid Elements            :    142445
  Total # of Rigid Element Constraints :   1019739
  Total # of Local Coordinate Systems  :       261
  Total # of Degrees of Freedom        :  34714278
  (Structural)
  Total # of Non-zero Stiffness Terms
  for this Local Domain                : 642160205

 
  Element Type Information
  ------------------------

   CBAR     Elements   :      705
   CELAS2/4 Elements   :       10
   CHEXA    Elements   :   198721
   CTETRA   Elements   :  5185338
   CPENTA   Elements   :     9974
   CONM2    Elements   :       30     
   CQUAD4   Elements   :  1889050     
   CTRIA3   Elements   :    86834     
   CBUSH    Elements   :      307     

Thanks for all hints