Don't fully regenerate models on startup, they will be regenerated if they are not there or if the hashes don't match so let MB use it's cached models if it can.

src/Umbraco.Web/PublishedCache/NuCache/PublishedSnapshotService.cs

@@ -160,7 +160,7 @@ namespace Umbraco.Web.PublishedCache.NuCache
 
             _domainStore = new SnapDictionary<int, Domain>();
 
-            publishedModelFactory.WithSafeLiveFactory(LoadCachesOnStartup);
+            LoadCachesOnStartup();
 
             Guid GetUid(ContentStore store, int id) => store.LiveSnapshot.Get(id)?.Uid ?? default;
             int GetId(ContentStore store, Guid uid) => store.LiveSnapshot.Get(uid)?.Id ?? default;