Performance issue with path_breadcrumbs_page_alter

On a very big website with a lot of content types, taxonomy and contexts, this function takes ~150ms so about 25% of the website total rendering time.

I quickly patched it with a simple cache_get/set:

--- i/path_breadcrumbs.module
+++ w/path_breadcrumbs.module
@@ -17,7 +17,14 @@ define('PATH_BREADCRUMBS_RICH_SNIPPETS_MICRODATA', 2);
  */
 function path_breadcrumbs_page_alter() {
   // See if current page has path breadcrumbs.
-  $breadcrumbs = path_breadcrumbs_load_variant(current_path());
+  $cache = cache_get('path_breadcrumbs:' . current_path(), 'cache');
+  if ($cache) {
+    $breadcrumbs = $cache->data;
+  }
+  else {
+    $breadcrumbs = path_breadcrumbs_load_variant(current_path());
+    cache_set('path_breadcrumbs:' . current_path(), $breadcrumbs, 'cache');
+  }
 
   // Set breadcrumbs for current page if it exists.
   if ($breadcrumbs) {