diff --git a/benchmark-fast/job-aps.sh b/benchmark-fast/job-aps.sh
index a9d8c0f447a1853c066c39d9d463484ca2cedaab..f6641be7bc1038eceaeb20dcfe536ab9cd3ab858 100644
--- a/benchmark-fast/job-aps.sh
+++ b/benchmark-fast/job-aps.sh
@@ -1,6 +1,6 @@
 #!/bin/bash
 #SBATCH --job-name="swiftaps"
-#SBATCH --ntasks=1
+#SBATCH --ntasks=4
 #SBATCH --ntasks-per-node=1
 #SBATCH --output=swiftaps.out
 #SBATCH --error=swiftaps.err
@@ -11,7 +11,8 @@
 #SBATCH --cpus-per-task=32
 
 module load intel_comp/2018
-module load intel_mpi/2018
+#module load intel_mpi/2018
+module load intel_mpi/2020-update2
 module load parmetis/4.0.3
 module load parallel_hdf5/1.10.3
 module load gsl/2.4
@@ -19,10 +20,9 @@ module load fftw/3.3.8epyc
 module load python/3.6.5
 module load vtune
 
-pushd swiftsim/examples/PMillennium/PMillennium-768
+pushd swiftsim/examples/HydroTests/SodShock_3D
 
 export MPS_STAT_LEVEL=2
 export APS_ARGS="--collection-mode=mpi,omp"
 
-mpirun -np 1 aps $APS_ARGS ../../swift_mpi --cosmology --self-gravity -v 1 --threads=64 -n 1 -P Restarts:enable:0 -PInitialConditions:file_name:/cosma5/data/do008/dc-fraw1/swift_initial_conditions/pmillenium/PMill-768.hdf5 p-mill-768.yml
-
+mpirun -np 4 aps $APS_ARGS ../../swift_mpi --hydro -v 1 --threads=64 -n 10000 -P Restarts:enable:0 sodShock.yml
diff --git a/benchmark-fast/job-arm.sh b/benchmark-fast/job-arm.sh
index 64c3ef9c198a0faec831d86666fe6e58d24b5800..9dfdb90682168febdd9406e934930bae066936cb 100644
--- a/benchmark-fast/job-arm.sh
+++ b/benchmark-fast/job-arm.sh
@@ -1,24 +1,28 @@
 #!/bin/bash
 #SBATCH --job-name="swiftarm"
-#SBATCH --ntasks=1
+#SBATCH --ntasks=4
 #SBATCH --ntasks-per-node=1
 #SBATCH --output=swiftarm.out
 #SBATCH --error=swiftarm.err
-#SBATCH --time=2:40:0
+#SBATCH --time=0:40:0
 #SBATCH -p bluefield1 
 ##SBATCH -A durham
 #SBATCH -A do008
 #SBATCH --cpus-per-task=32
 
 module load intel_comp/2018
-module load intel_mpi/2018
+#module load intel_mpi/2018
+module load intel_mpi/2020-update2
 module load parmetis/4.0.3
 module load parallel_hdf5/1.10.3
 module load gsl/2.4
 module load fftw/3.3.8epyc
 module load python/3.6.5
-module load allinea/ddt/20.2.1
-pushd swiftsim/examples/PMillennium/PMillennium-768
+module load vtune
 
-perf-report --mpi=intel-mpi -np 1 ../../swift_mpi --cosmology --self-gravity -v 1 --threads=64 -n 1 -P Restarts:enable:0 -PInitialConditions:file_name:/cosma5/data/do008/dc-fraw1/swift_initial_conditions/pmillenium/PMill-768.hdf5 p-mill-768.yml
+pushd swiftsim/examples/HydroTests/SodShock_3D
 
+export MPS_STAT_LEVEL=2
+export APS_ARGS="--collection-mode=mpi,omp"
+
+perf-report --mpi=intel-mpi -np 4 ../../swift_mpi --hydro -v 1 --threads=64 -n 10000 -P Restarts:enable:0 sodShock.yml
diff --git a/benchmark-slow/build.sh b/benchmark-slow/build.sh
new file mode 100644
index 0000000000000000000000000000000000000000..ffa20bed112dbe2d2b4aa2a7dc746b8f672c7754
--- /dev/null
+++ b/benchmark-slow/build.sh
@@ -0,0 +1,17 @@
+module load intel_comp/2018
+module load intel_mpi/2018
+module load parmetis/4.0.3
+module load parallel_hdf5/1.10.3
+module load gsl/2.4
+module load fftw/3.3.8epyc
+module load python/3.6.5
+rm -rf swiftsim
+cp -rf ../../swiftsim ./
+pushd swiftsim
+git checkout bd36987f24e03ef35a52d40288dad77fe374dfc4
+git clean -x -f -d
+./autogen.sh
+cd ./
+./configure CC="icc" CXX="icpc" --enable-ipo --with-tbbmalloc --with-parmetis
+make -j 32
+
diff --git a/benchmark-fast/job-aps-sodshock.sh b/benchmark-slow/job-aps.sh
similarity index 51%
rename from benchmark-fast/job-aps-sodshock.sh
rename to benchmark-slow/job-aps.sh
index bdc8b918ad7c89537c4afef385fa1252948ce370..a9d8c0f447a1853c066c39d9d463484ca2cedaab 100644
--- a/benchmark-fast/job-aps-sodshock.sh
+++ b/benchmark-slow/job-aps.sh
@@ -1,9 +1,9 @@
 #!/bin/bash
-#SBATCH --job-name="swiftapssodshock"
-#SBATCH --ntasks=4
+#SBATCH --job-name="swiftaps"
+#SBATCH --ntasks=1
 #SBATCH --ntasks-per-node=1
-#SBATCH --output=swiftapssodshock.out
-#SBATCH --error=swiftapssodshock.err
+#SBATCH --output=swiftaps.out
+#SBATCH --error=swiftaps.err
 #SBATCH --time=0:40:0
 #SBATCH -p bluefield1 
 ##SBATCH -A durham
@@ -19,9 +19,10 @@ module load fftw/3.3.8epyc
 module load python/3.6.5
 module load vtune
 
-pushd swiftsim/examples/HydroTests/SodShock_3D
+pushd swiftsim/examples/PMillennium/PMillennium-768
 
 export MPS_STAT_LEVEL=2
 export APS_ARGS="--collection-mode=mpi,omp"
 
-mpirun -np 4 aps $APS_ARGS ../../swift_mpi --hydro -v 1 --threads=64 -n 10000 -P Restarts:enable:0 sodShock.yml
+mpirun -np 1 aps $APS_ARGS ../../swift_mpi --cosmology --self-gravity -v 1 --threads=64 -n 1 -P Restarts:enable:0 -PInitialConditions:file_name:/cosma5/data/do008/dc-fraw1/swift_initial_conditions/pmillenium/PMill-768.hdf5 p-mill-768.yml
+
diff --git a/benchmark-slow/job-arm.sh b/benchmark-slow/job-arm.sh
new file mode 100644
index 0000000000000000000000000000000000000000..64c3ef9c198a0faec831d86666fe6e58d24b5800
--- /dev/null
+++ b/benchmark-slow/job-arm.sh
@@ -0,0 +1,24 @@
+#!/bin/bash
+#SBATCH --job-name="swiftarm"
+#SBATCH --ntasks=1
+#SBATCH --ntasks-per-node=1
+#SBATCH --output=swiftarm.out
+#SBATCH --error=swiftarm.err
+#SBATCH --time=2:40:0
+#SBATCH -p bluefield1 
+##SBATCH -A durham
+#SBATCH -A do008
+#SBATCH --cpus-per-task=32
+
+module load intel_comp/2018
+module load intel_mpi/2018
+module load parmetis/4.0.3
+module load parallel_hdf5/1.10.3
+module load gsl/2.4
+module load fftw/3.3.8epyc
+module load python/3.6.5
+module load allinea/ddt/20.2.1
+pushd swiftsim/examples/PMillennium/PMillennium-768
+
+perf-report --mpi=intel-mpi -np 1 ../../swift_mpi --cosmology --self-gravity -v 1 --threads=64 -n 1 -P Restarts:enable:0 -PInitialConditions:file_name:/cosma5/data/do008/dc-fraw1/swift_initial_conditions/pmillenium/PMill-768.hdf5 p-mill-768.yml
+