1 files changed, 3 insertions, 0 deletions

diff --git a/native/src/linprog/cplex.cpp b/native/src/linprog/cplex.cpp
index 9be1e74..3706379 100644
--- a/native/src/linprog/cplex.cpp
+++ b/native/src/linprog/cplex.cpp
@@ -96,6 +96,9 @@ void CPLEXSolution::solve_model(unsigned int max_num_vars,
                 solver_costs.start();
 #endif
 
+                // The primal solver seems to be slightly faster.
+                cplex.setParam(IloCplex::RootAlg, IloCplex::Primal);
+                cplex.setParam(IloCplex::PreDual, -1);
                 cplex.solve();
 
 #if DEBUG_LP_OVERHEADS >= 3