diff --git a/datasets/landsat/package/LandsatHlsRaster.cpp b/datasets/landsat/package/LandsatHlsRaster.cpp
index eda182e8..31d93f70 100644
--- a/datasets/landsat/package/LandsatHlsRaster.cpp
+++ b/datasets/landsat/package/LandsatHlsRaster.cpp
@@ -357,7 +357,7 @@ uint32_t LandsatHlsRaster::_getGroupSamples(sample_mode_t mode, const rasters_gr
             assert(ur);
 
             /* Get the sample for this point from unique raster */
-            for(const point_sample_t& ps : ur->pointSamples)
+            for(point_sample_t& ps : ur->pointSamples)
             {
                 if(ps.pointIndex == pointIndx)
                 {
@@ -373,12 +373,22 @@ uint32_t LandsatHlsRaster::_getGroupSamples(sample_mode_t mode, const rasters_gr
                         const bool returnBandSample = it->second;
                         if(returnBandSample)
                         {
-                            /* Create a copy of the sample and add it to the list */
-                            RasterSample* sample = new RasterSample(*ps.sample);
-
-                            /* Set flags for this sample */
-                            sample->flags = flags;
-                            slist->add(sample);
+                            RasterSample* s;
+                            if(!ps.sampleReturned)
+                            {
+                                ps.sampleReturned = true;
+                                s = ps.sample;
+                            }
+                            else
+                            {
+                                /* Sample has already been returned, must create a copy */
+                                s = new RasterSample(*ps.sample);
+                            }
+
+                            /* Set flags for this sample, add it to the list */
+                            s->flags = flags;
+                            slist->add(s);
+                            errors |= ps.ssErrors;
                         }
                     }
                     errors |= ps.ssErrors;
diff --git a/scripts/systests/parquet_sampler_landsat_perf_test.lua b/scripts/systests/parquet_sampler_landsat_perf_test.lua
index 7d43ff96..805ac4f6 100644
--- a/scripts/systests/parquet_sampler_landsat_perf_test.lua
+++ b/scripts/systests/parquet_sampler_landsat_perf_test.lua
@@ -1,12 +1,22 @@
 local runner = require("test_executive")
-console = require("console")
-asset = require("asset")
-local assets = asset.loaddir()
-local td = runner.rootdir(arg[0])
+local console = require("console")
+local asset = require("asset")
+local csv = require("csv")
+local json = require("json")
+local _,td = runner.srcscript()
 
 -- Setup --
--- console.monitor:config(core.LOG, core.DEBUG)
--- sys.setlvl(core.LOG, core.DEBUG)
+local assets = asset.loaddir()
+
+console.monitor:config(core.LOG, core.DEBUG)
+sys.setlvl(core.LOG, core.DEBUG)
+
+local script_parms = {earthdata="https://data.lpdaac.earthdatacloud.nasa.gov/s3credentials", identity="lpdaac-cloud"}
+local earthdata_auth_script = core.script("earth_data_auth", json.encode(script_parms))
+while not aws.csget("lpdaac-cloud") do
+    print("Waiting to authenticate to LPDAAC...")
+    sys.wait(1)
+end
 
 local outq_name = "outq-luatest"
 
@@ -29,9 +39,6 @@ local contents = f:read("*all")
 f:close()
 
 
--- console.monitor:config(core.LOG, core.DEBUG)
--- sys.setlvl(core.LOG, core.DEBUG)
-
 function getFileSize(filePath)
     local file = io.open(filePath, "rb")  -- 'rb' mode opens the file in binary mode
     if not file then