diff --git a/mon/lp-optimizer.js b/mon/lp-optimizer.js
index d251b9c9..0d47af87 100644
--- a/mon/lp-optimizer.js
+++ b/mon/lp-optimizer.js
@@ -50,7 +50,7 @@ async function lp_solve(text)
     return { score, vars };
 }
 
-async function optimize_initial({ osd_tree, pg_count, pg_size = 3, pg_minsize = 2, max_combinations = 10000, parity_space = 1 })
+async function optimize_initial({ osd_tree, pg_count, pg_size = 3, pg_minsize = 2, max_combinations = 10000, parity_space = 1, round_robin = false })
 {
     if (!pg_count || !osd_tree)
     {
@@ -92,7 +92,7 @@ async function optimize_initial({ osd_tree, pg_count, pg_size = 3, pg_minsize =
         console.log(lp);
         throw new Error('Problem is infeasible or unbounded - is it a bug?');
     }
-    const int_pgs = make_int_pgs(lp_result.vars, pg_count);
+    const int_pgs = make_int_pgs(lp_result.vars, pg_count, round_robin);
     const eff = pg_list_space_efficiency(int_pgs, all_weights, pg_minsize, parity_space);
     const res = {
         score: lp_result.score,
@@ -115,7 +115,7 @@ function shuffle(array)
     }
 }
 
-function make_int_pgs(weights, pg_count)
+function make_int_pgs(weights, pg_count, round_robin)
 {
     const total_weight = Object.values(weights).reduce((a, c) => Number(a) + Number(c), 0);
     let int_pgs = [];
@@ -123,10 +123,15 @@ function make_int_pgs(weights, pg_count)
     let weight_left = total_weight;
     for (const pg_name in weights)
     {
+        let cur_pg = pg_name.substr(3).split('_');
         let n = Math.round(weights[pg_name] / weight_left * pg_left);
         for (let i = 0; i < n; i++)
         {
-            int_pgs.push(pg_name.substr(3).split('_'));
+            int_pgs.push([ ...cur_pg ]);
+            if (round_robin)
+            {
+                cur_pg.push(cur_pg.shift());
+            }
         }
         weight_left -= weights[pg_name];
         pg_left -= n;
diff --git a/mon/mon.js b/mon/mon.js
index fdb40ce0..afa04d63 100644
--- a/mon/mon.js
+++ b/mon/mon.js
@@ -1022,6 +1022,7 @@ class Mon
                     pg_size: pool_cfg.pg_size,
                     pg_minsize: pool_cfg.pg_minsize,
                     max_combinations: pool_cfg.max_osd_combinations,
+                    round_robin: pool_cfg.scheme != 'replicated',
                 };
                 let optimize_result;
                 if (old_pg_count > 0)