diff --git a/.github/workflows/postsubmit-main.yml b/.github/workflows/postsubmit-main.yml
index fe6b39d44a..518c2b16a8 100644
--- a/.github/workflows/postsubmit-main.yml
+++ b/.github/workflows/postsubmit-main.yml
@@ -10,7 +10,7 @@ jobs:
   # a branch on filament-assets.
   update-renderdiff-goldens:
     name: update-renderdiff-goldens
-    runs-on: 'macos-14-xlarge'
+    runs-on: 'macos-14'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -90,7 +90,7 @@ jobs:
   # filament-assets
   update-sizeguard:
     name: update-sizeguard
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04-4core'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
diff --git a/.github/workflows/postsubmit.yml b/.github/workflows/postsubmit.yml
index e10f698baa..104793085b 100644
--- a/.github/workflows/postsubmit.yml
+++ b/.github/workflows/postsubmit.yml
@@ -12,7 +12,7 @@ jobs:
     name: build-android
     # We intentially use a larger runner here to enable larger disk space
     # (standard linux runner will fail on disk space and faster build time).
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04-4core'
 
     steps:
       - uses: actions/checkout@v4.1.6
@@ -26,7 +26,7 @@ jobs:
 
   build-ios:
     name: build-ios
-    runs-on: macos-14-xlarge
+    runs-on: 'macos-14'
 
     steps:
       - uses: actions/checkout@v4.1.6
@@ -46,7 +46,7 @@ jobs:
 
   build-linux:
     name: build-linux
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04-4core'
 
     steps:
       - uses: actions/checkout@v4.1.6
@@ -63,7 +63,7 @@ jobs:
 
   build-mac:
     name: build-mac
-    runs-on: macos-14-xlarge
+    runs-on: 'macos-14'
 
     steps:
       - uses: actions/checkout@v4.1.6
@@ -83,7 +83,7 @@ jobs:
 
   build-web:
     name: build-web
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04'
 
     steps:
       - uses: actions/checkout@v4.1.6
@@ -101,7 +101,7 @@ jobs:
 
   build-windows:
     name: build-windows
-    runs-on: windows-2022-32core
+    runs-on: 'windows-2022'
 
     steps:
       - uses: actions/checkout@v4.1.6
diff --git a/.github/workflows/presubmit.yml b/.github/workflows/presubmit.yml
index 646467f31e..07711b787a 100644
--- a/.github/workflows/presubmit.yml
+++ b/.github/workflows/presubmit.yml
@@ -11,7 +11,7 @@ on:
 jobs:
   build-desktop-mac:
     name: build-mac
-    runs-on: macos-14-xlarge
+    runs-on: 'macos-14-xlarge'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -26,7 +26,7 @@ jobs:
 
   build-desktop-linux:
     name: build-linux
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04-4core'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -41,7 +41,7 @@ jobs:
 
   build-windows:
     name: build-windows
-    runs-on: windows-2022-32core
+    runs-on: 'windows-2022'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -53,7 +53,7 @@ jobs:
 
   build-android:
     name: build-android
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04-4core'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -80,7 +80,7 @@ jobs:
 
   build-ios:
     name: build-iOS
-    runs-on: macos-14-xlarge
+    runs-on: 'macos-14-xlarge'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -95,7 +95,7 @@ jobs:
 
   build-web:
     name: build-web
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04-4core'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -108,7 +108,7 @@ jobs:
 
   validate-docs:
     name: validate-docs
-    runs-on: 'ubuntu-24.04-4core'
+    runs-on: 'ubuntu-24.04'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -121,7 +121,7 @@ jobs:
 
   test-renderdiff:
     name: test-renderdiff
-    runs-on: macos-14-xlarge
+    runs-on: 'macos-14-xlarge'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -190,7 +190,7 @@ jobs:
 
   validate-wgsl-webgpu:
     name: validate-wgsl-webgpu
-    runs-on: 'ubuntu-24.04-16core'
+    runs-on: 'ubuntu-24.04-4core'
     steps:
       - uses: actions/checkout@v4.1.6
         with:
@@ -224,7 +224,7 @@ jobs:
 
   test-backend:
     name: test-backend
-    runs-on: macos-14-xlarge
+    runs-on: 'macos-14-xlarge'
     steps:
       - uses: actions/checkout@v4.1.6
         with: