diff --git a/.github/workflows/touchstone-comment.yaml b/.github/workflows/touchstone-comment.yaml
index ca14d073..ea5e392b 100644
--- a/.github/workflows/touchstone-comment.yaml
+++ b/.github/workflows/touchstone-comment.yaml
@@ -1,25 +1,46 @@
 name: Continuous Benchmarks (Comment)
 
 concurrency:
-  group: ${{ github.workflow }}-${{ github.head_ref }}
+  group: ${{ github.workflow }}-${{ github.run_id }}
   cancel-in-progress: true
 
 on:
   workflow_run:
     workflows: ["Continuous Benchmarks (Receive)"]
-    types:
-      - completed
+    types: [completed]
 
 jobs:
-  upload:
+  comment:
     runs-on: ubuntu-latest
     permissions:
       actions: read
       pull-requests: write
-      statuses: write
-    if: >
-      ${{ github.event.workflow_run.event == 'pull_request' }}
+    if: ${{ github.event.workflow_run.event == 'pull_request' }}
     steps:
-      - uses: lorenzwalthert/touchstone/actions/comment@main
+      - name: Download Touchstone artifact
+        id: download
+        uses: actions/download-artifact@v8
+        with:
+          name: pr
+          github-token: ${{ github.token }}
+          repository: ${{ github.repository }}
+          run-id: ${{ github.event.workflow_run.id }}
+
+      # defensive since issues could cause commenting in random places
+      - name: Read PR number
+        id: pr
+        shell: bash
+        run: |
+          number="$(tr -cd '0-9' < ./NR)"
+          test -n "$number"
+          echo "number=$number" >> "$GITHUB_OUTPUT"
+
+      - name: Create or update sticky PR comment
+        id: comment
+        uses: marocchino/sticky-pull-request-comment@v3
         with:
           GITHUB_TOKEN: ${{ github.token }}
+          number_force: ${{ steps.pr.outputs.number }}
+          header: touchstone
+          path: ./info.txt
+          skip_unchanged: true
diff --git a/touchstone/script.R b/touchstone/script.R
index 644259bb..8245a535 100644
--- a/touchstone/script.R
+++ b/touchstone/script.R
@@ -4,14 +4,12 @@
 # installs branches to benchmark
 touchstone::branch_install()
 
+# make log lik available to tests
 touchstone::pin_assets("touchstone/wine.rds")
 
-# These synthetic workloads are large enough to expose real slowdowns in the
-# core `loo()` paths, but still short enough to keep PR feedback reasonably fast.
 touchstone::benchmark_run(
   expr_before_benchmark = {
     suppressPackageStartupMessages(library(loo))
-    # benchmark_run() evaluates in a callr subprocess, so load pinned assets here.
     wine_log_lik_matrix <- readRDS(touchstone::path_pinned_asset(
       "touchstone/wine.rds"
     ))
@@ -26,7 +24,7 @@ touchstone::benchmark_run(
       )
     )
   },
-  n = 10
+  n = 30
 )
 
 touchstone::benchmark_run(
@@ -50,7 +48,7 @@ touchstone::benchmark_run(
       )
     )
   },
-  n = 10
+  n = 30
 )
 
 # create artifacts used downstream in the GitHub Action