diff --git a/gradle/changelog/repo_permissions.yaml b/gradle/changelog/repo_permissions.yaml
new file mode 100644
index 0000000000..f589356760
--- /dev/null
+++ b/gradle/changelog/repo_permissions.yaml
@@ -0,0 +1,2 @@
+- type: fixed
+  description: Significantly improved repository load times for large numbers of repositories
diff --git a/scm-ui/ui-api/package.json b/scm-ui/ui-api/package.json
index 104e941749..390b8908e8 100644
--- a/scm-ui/ui-api/package.json
+++ b/scm-ui/ui-api/package.json
@@ -33,7 +33,7 @@
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/jest-preset": "^2.14.1",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@testing-library/react-hooks": "8.0.1",
     "@types/react": "^17.0.1",
     "react-test-renderer": "^17.0.1",
diff --git a/scm-ui/ui-buttons/package.json b/scm-ui/ui-buttons/package.json
index 0478e631f5..95de0337d2 100644
--- a/scm-ui/ui-buttons/package.json
+++ b/scm-ui/ui-buttons/package.json
@@ -18,7 +18,7 @@
   "devDependencies": {
     "@scm-manager/prettier-config": "^2.12.0",
     "@scm-manager/eslint-config": "^2.17.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT"
+    "@scm-manager/tsconfig": "^2.13.0"
   },
   "prettier": "@scm-manager/prettier-config",
   "eslintConfig": {
diff --git a/scm-ui/ui-components/package.json b/scm-ui/ui-components/package.json
index d2bb7cbf2b..bb7b86747a 100644
--- a/scm-ui/ui-components/package.json
+++ b/scm-ui/ui-components/package.json
@@ -66,7 +66,7 @@
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/jest-preset": "^2.14.1",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@scm-manager/ui-syntaxhighlighting": "3.7.7-SNAPSHOT",
     "@scm-manager/ui-shortcuts": "3.7.7-SNAPSHOT",
     "@scm-manager/ui-text": "3.7.7-SNAPSHOT"
diff --git a/scm-ui/ui-core/package.json b/scm-ui/ui-core/package.json
index 393b63ce79..4a86df2e5f 100644
--- a/scm-ui/ui-core/package.json
+++ b/scm-ui/ui-core/package.json
@@ -35,7 +35,7 @@
   "devDependencies": {
     "@scm-manager/prettier-config": "^2.12.0",
     "@scm-manager/eslint-config": "^2.17.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@scm-manager/babel-preset": "^2.13.1",
     "@scm-manager/ui-types": "3.7.7-SNAPSHOT",
     "@types/mousetrap": "1.6.5",
@@ -80,4 +80,4 @@
       "jest-extended/all"
     ]
   }
-}
\ No newline at end of file
+}
diff --git a/scm-ui/ui-extensions/package.json b/scm-ui/ui-extensions/package.json
index 9029efcf32..4bfd99d462 100644
--- a/scm-ui/ui-extensions/package.json
+++ b/scm-ui/ui-extensions/package.json
@@ -27,7 +27,7 @@
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/jest-preset": "^2.14.1",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@types/enzyme": "^3.10.18",
     "@types/react": "^17.0.1",
     "tsup": "^5.12.6",
diff --git a/scm-ui/ui-forms/package.json b/scm-ui/ui-forms/package.json
index 9ad0b20755..e81567ff7c 100644
--- a/scm-ui/ui-forms/package.json
+++ b/scm-ui/ui-forms/package.json
@@ -26,7 +26,7 @@
   "devDependencies": {
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT"
+    "@scm-manager/tsconfig": "^2.13.0"
   },
   "prettier": "@scm-manager/prettier-config",
   "eslintConfig": {
diff --git a/scm-ui/ui-layout/package.json b/scm-ui/ui-layout/package.json
index 091149815e..375b6af9c9 100644
--- a/scm-ui/ui-layout/package.json
+++ b/scm-ui/ui-layout/package.json
@@ -19,7 +19,7 @@
   "devDependencies": {
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT"
+    "@scm-manager/tsconfig": "^2.13.0"
   },
   "prettier": "@scm-manager/prettier-config",
   "eslintConfig": {
diff --git a/scm-ui/ui-overlays/package.json b/scm-ui/ui-overlays/package.json
index fe5e78e329..343c7f9ba7 100644
--- a/scm-ui/ui-overlays/package.json
+++ b/scm-ui/ui-overlays/package.json
@@ -24,7 +24,7 @@
   "devDependencies": {
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT"
+    "@scm-manager/tsconfig": "^2.13.0"
   },
   "prettier": "@scm-manager/prettier-config",
   "eslintConfig": {
diff --git a/scm-ui/ui-plugins/package.json b/scm-ui/ui-plugins/package.json
index 7f0d8b2825..878e09a93d 100644
--- a/scm-ui/ui-plugins/package.json
+++ b/scm-ui/ui-plugins/package.json
@@ -42,7 +42,7 @@
     "@scm-manager/jest-preset": "^2.14.1",
     "@scm-manager/plugin-scripts": "^1.6.1",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@scm-manager/ui-tests": "3.7.7-SNAPSHOT",
     "@scm-manager/ui-types": "3.7.7-SNAPSHOT",
     "@types/classnames": "^2.3.1",
diff --git a/scm-ui/ui-shortcuts/package.json b/scm-ui/ui-shortcuts/package.json
index 8af2f37057..e314aeda8b 100644
--- a/scm-ui/ui-shortcuts/package.json
+++ b/scm-ui/ui-shortcuts/package.json
@@ -15,7 +15,7 @@
   "devDependencies": {
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT"
+    "@scm-manager/tsconfig": "^2.13.0"
   },
   "dependencies": {
     "@scm-manager/ui-core": "3.7.7-SNAPSHOT"
diff --git a/scm-ui/ui-syntaxhighlighting/package.json b/scm-ui/ui-syntaxhighlighting/package.json
index 985131b3ff..8be1e07643 100644
--- a/scm-ui/ui-syntaxhighlighting/package.json
+++ b/scm-ui/ui-syntaxhighlighting/package.json
@@ -28,7 +28,7 @@
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/jest-preset": "^2.14.1",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@storybook/addon-essentials": "^6.5.10",
     "@storybook/builder-webpack5": "^6.5.10",
     "@storybook/manager-webpack5": "^6.5.10",
diff --git a/scm-ui/ui-tests/package.json b/scm-ui/ui-tests/package.json
index bb082e1758..edbba3f05c 100644
--- a/scm-ui/ui-tests/package.json
+++ b/scm-ui/ui-tests/package.json
@@ -17,7 +17,7 @@
     "raf": "^3.4.1"
   },
   "peerDependencies": {
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@scm-manager/prettier-config": "^2.12.0",
     "@types/enzyme": "^3.10.18"
   },
diff --git a/scm-ui/ui-text/package.json b/scm-ui/ui-text/package.json
index 913b75f9ed..2b554d9d7b 100644
--- a/scm-ui/ui-text/package.json
+++ b/scm-ui/ui-text/package.json
@@ -15,7 +15,7 @@
   "devDependencies": {
     "@scm-manager/eslint-config": "^2.17.0",
     "@scm-manager/prettier-config": "^2.12.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT"
+    "@scm-manager/tsconfig": "^2.13.0"
   },
   "prettier": "@scm-manager/prettier-config",
   "eslintConfig": {
diff --git a/scm-ui/ui-types/package.json b/scm-ui/ui-types/package.json
index 977eca8707..b0985edc78 100644
--- a/scm-ui/ui-types/package.json
+++ b/scm-ui/ui-types/package.json
@@ -17,7 +17,7 @@
   },
   "devDependencies": {
     "@scm-manager/eslint-config": "^2.17.0",
-    "@scm-manager/tsconfig": "3.7.7-SNAPSHOT",
+    "@scm-manager/tsconfig": "^2.13.0",
     "@scm-manager/prettier-config": "^2.12.0"
   },
   "babel": {
diff --git a/scm-webapp/src/main/java/sonia/scm/repository/DefaultRepositoryManager.java b/scm-webapp/src/main/java/sonia/scm/repository/DefaultRepositoryManager.java
index 3267ede87c..b511ff2e3a 100644
--- a/scm-webapp/src/main/java/sonia/scm/repository/DefaultRepositoryManager.java
+++ b/scm-webapp/src/main/java/sonia/scm/repository/DefaultRepositoryManager.java
@@ -55,6 +55,7 @@ import java.util.function.Function;
 import java.util.function.Predicate;
 import java.util.function.Supplier;
 import java.util.stream.Collector;
+import java.util.stream.Stream;
 
 import static java.util.Collections.emptySet;
 import static sonia.scm.AlreadyExistsException.alreadyExists;
@@ -373,6 +374,16 @@ public class DefaultRepositoryManager extends AbstractRepositoryManager {
     return repositories;
   }
 
+  private Stream<Repository> streamAll(Predicate<Repository> filter) {
+    return repositoryDAO
+      .getAll()
+      .stream()
+      .filter(repository -> handlerMap.containsKey(repository.getType()))
+      .filter(filter)
+      .filter(repository -> RepositoryPermissions.read().isPermitted(repository))
+      .map(this::postProcess);
+  }
+
   @Override
   public Collection<Repository> getAll() {
     return getAll(repository -> true, null);
@@ -402,9 +413,10 @@ public class DefaultRepositoryManager extends AbstractRepositoryManager {
   @Deprecated
   @Override
   public Collection<String> getAllNamespaces() {
-    return getAll().stream()
-      .map(Repository::getNamespace)
-      .collect(LINKED_HASH_SET_COLLECTOR);
+    Set<String> foundNamespaces = new HashSet<>();
+    streamAll(repository -> !foundNamespaces.contains(repository.getNamespace()))
+      .forEach(repository -> foundNamespaces.add(repository.getNamespace()));
+    return foundNamespaces;
   }
 
   @Override
diff --git a/yarn.lock b/yarn.lock
index 39145fd5e6..4436b1729c 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -3131,7 +3131,7 @@
     unist-util-generated "^1.1.6"
     unist-util-visit "^2.0.3"
 
-"@scm-manager/tsconfig@^2.12.0", "@scm-manager/tsconfig@^2.13.0":
+"@scm-manager/tsconfig@^2.13.0":
   version "2.13.0"
   resolved "https://registry.npmjs.org/@scm-manager/tsconfig/-/tsconfig-2.13.0.tgz"
   integrity sha512-Tc9LZAxHUKd+yVBHcCMyRVYTBjhJez+zj+ABxiTOdZOQp/WtJ2Zt084HWxWEOyrXHI6dgo3qv+1H6P1m+UcpoQ==