diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
index 0a63939e2..b27f2d0b9 100644
--- a/.github/workflows/pull_request.yml
+++ b/.github/workflows/pull_request.yml
@@ -254,14 +254,23 @@ jobs:
     - name: Install jxl-perfhistory
       run: cargo install --git https://github.com/zond/jxl-perfhistory
 
-    - name: Select a few test images
+    - name: Select benchmark corpus
       id: select-images
       run: |
-        mkdir testimages
-        cp jxl/resources/test/conformance_test_images/sunset_logo.jxl testimages
-        cp jxl/resources/test/conformance_test_images/bike.jxl testimages
-        cp jxl/resources/test/green_queen_modular_e3.jxl testimages
-        cp jxl/resources/test/green_queen_vardct_e3.jxl testimages
+        mkdir -p testimages
+
+        # Keep this aligned with the autoresearch image set so CI numbers stay
+        # comparable while avoiding benchmark timeouts.
+        cp jxl/resources/test/conformance_test_images/sunset_logo.jxl testimages/sunset_logo.jxl
+        cp jxl/resources/test/conformance_test_images/bike.jxl testimages/bike.jxl
+        cp jxl/resources/test/green_queen_modular_e3.jxl testimages/green_queen_modular_e3.jxl
+        cp jxl/resources/test/green_queen_vardct_e3.jxl testimages/green_queen_vardct_e3.jxl
+        cp jxl/resources/test/conformance_test_images/bicycles.jxl testimages/bicycles.jxl
+        cp jxl/resources/test/conformance_test_images/delta_palette.jxl testimages/delta_palette.jxl
+        cp jxl/resources/test/conformance_test_images/lz77_flower.jxl testimages/lz77_flower.jxl
+        cp jxl/resources/test/conformance_test_images/patches.jxl testimages/patches_lossless.jxl
+
+        echo "Selected $(find testimages -maxdepth 1 -name '*.jxl' | wc -l) images for benchmark"
 
     - name: Cache benchmark binaries
       uses: actions/cache@v4
diff --git a/Cargo.toml b/Cargo.toml
index 4409589fa..8d53f406c 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,7 @@
 [profile.release]
 debug = true
+lto = "thin"
+panic = "abort"
 
 [profile.bench]
 debug = true