diff --git a/.github/workflows/common-performance.yml b/.github/workflows/common-performance.yml
index 6f21fd66..151cd430 100644
--- a/.github/workflows/common-performance.yml
+++ b/.github/workflows/common-performance.yml
@@ -53,6 +53,11 @@ on:
         type: string
         default: 'reno'
         required: false
+      slowstart:
+        description: 'CC Slowstart algorithm to use (if supported by the backend)'
+        type: string
+        default: 'basic'
+        required: false
       ignore_caches:
         description: 'resets caches to force new build'
         type: boolean
@@ -132,6 +137,7 @@ jobs:
           $config = $config.replace('<QPEP_ADDRESS>','${{ inputs.client_listen_address }}')
           $config = $config.replace('<QPEP_BACKEND>','${{ inputs.backend }}')
           $config = $config.replace('<QPEP_CCA>','${{ inputs.cca }}')
+          $config = $config.replace('<QPEP_SLOWSTART>','${{ inputs.slowstart }}')
           $config > ./build/config/qpep.yml
           write-host $config
           Copy-Item "./windivert/x64/*" -Destination "./build"
@@ -174,7 +180,7 @@ jobs:
     strategy:
       max-parallel: 1
       matrix:
-        download_size: [ 5, 10 ]
+        download_size: [ 10 ]
         connections_number: [ 1, 4 ]
     env:
       REMOTE_GATEWAY: ${{ inputs.server_public_address }}
@@ -287,6 +293,7 @@ jobs:
       QPEP_REV: HEAD
       QPEP_BACKEND: ${{ inputs.backend }}
       QPEP_CCA: ${{ inputs.cca }}
+      QPEP_SLOWSTART: ${{ inputs.slowstart }}
     steps:
       - name: Pre-Cleanup
         run: |
diff --git a/.github/workflows/performance.yml b/.github/workflows/performance.yml
index 780f41f9..b3ac8f26 100644
--- a/.github/workflows/performance.yml
+++ b/.github/workflows/performance.yml
@@ -89,11 +89,17 @@ jobs:
       max-parallel: 1
       matrix:
         backend: [ 'quic-go', 'quicly-go' ]
-        cca: [ 'reno', 'search' ]
-        connection_delay_ms: [ 0, 500 ]
+        cca: [ 'reno' ]
+        slowstart: [ 'search' ]
+        connection_delay_ms: [ 0 ]
+        # cca: [ 'reno', 'cubic' ]
+        # slowstart: [ 'search', 'basic' ]
+        # connection_delay_ms: [ 0, 500 ]
         exclude:
           - backend: 'quic-go'
-            cca: 'search'
+            slowstart: 'search'
+          - backend: 'quic-go'
+            cca: 'cubic'
     uses: './.github/workflows/common-performance.yml'
     with:
       server_public_address: ${{ inputs.server_public_address }}
@@ -103,4 +109,5 @@ jobs:
       ignore_caches: ${{ inputs.ignore_caches }}
       backend: ${{ matrix.backend }}
       cca: ${{ matrix.cca }}
+      slowstart: ${{ matrix.slowstart }}
     secrets: inherit
diff --git a/docker/client-env/qpep.yml.tpl b/docker/client-env/qpep.yml.tpl
index 05293fd2..839a2e00 100644
--- a/docker/client-env/qpep.yml.tpl
+++ b/docker/client-env/qpep.yml.tpl
@@ -9,6 +9,7 @@ listenport: 9443
 # backend
 backend: <QPEP_BACKEND>
 ccalgorithm: <QPEP_CCA>
+ccslowstart: <QPEP_SLOWSTART>
 
 # certificate
 certificate: server_cert.pem
diff --git a/docker/server-env/docker-compose.yml b/docker/server-env/docker-compose.yml
index ffce35e6..db22e920 100644
--- a/docker/server-env/docker-compose.yml
+++ b/docker/server-env/docker-compose.yml
@@ -18,6 +18,7 @@ services:
     environment:
       - QPEP_BACKEND=${QPEP_BACKEND}
       - QPEP_CCA=${QPEP_CCA}
+      - QPEP_SLOWSTART=${QPEP_SLOWSTART}
     build:
       context: server/
       args:
diff --git a/docker/server-env/server/Dockerfile b/docker/server-env/server/Dockerfile
index 9ec418cd..3e12fbcf 100644
--- a/docker/server-env/server/Dockerfile
+++ b/docker/server-env/server/Dockerfile
@@ -8,6 +8,7 @@ ENV GOPATH "/opt/gopath"
 ENV BUILDKIT_PROGRESS "plain"
 ENV QPEP_BACKEND="quic-go"
 ENV QPEP_CCA="reno"
+ENV QPEP_SLOWSTART="basic"
 
 ARG GO_VERSION="1.20.14"
 ARG QPEP_REPO="https://github.com/Project-Faster/qpep.git"
diff --git a/docker/server-env/server/config/qpep.yml.tpl b/docker/server-env/server/config/qpep.yml.tpl
index b101320b..8d776486 100644
--- a/docker/server-env/server/config/qpep.yml.tpl
+++ b/docker/server-env/server/config/qpep.yml.tpl
@@ -9,6 +9,7 @@ listenport: 1443
 # backend
 backend: ${QPEP_BACKEND}
 ccalgorithm: ${QPEP_CCA}
+ccslowstart: ${QPEP_SLOWSTART}
 
 # certificate
 certificate: server_cert.pem