Assetbundles freeze on load from cache

The huge freeze on loading assetbundles from cache (there is no freeze on first load from web). All of assetbundles are loading consistently. MacOS + Unity 2019.4.24f1

  protected override async Task<UnityEngine.AssetBundle> LoadAssetFromCache(T info)
         {
             var cacheKey = _amazonS3Provider.GetAssetPath(info.CloudId, GetBundleType());
             return await LoadBundleFile(info.DownloadUrl, cacheKey, info.CurrentHash);
         }
             
         private async Task<UnityEngine.AssetBundle> LoadBundleFile(string url, string cacheKey,
             string downloadBundleHash)
         {
             if (string.IsNullOrEmpty(url))
             {
                 throw new InvalidOperationException("bundle download url can not be null or empty");
             }
 
             if (string.IsNullOrEmpty(downloadBundleHash))
             {
                 throw new InvalidOperationException("bundle hash can not be null or empty");
             }
 
             var uwr = new UnityWebRequest(
                 url,
                 "GET",
                 new DownloadHandlerAssetBundle(cacheKey, Hash128.Compute(downloadBundleHash), 0),
                 null
             );
 
             using (uwr)
             {
                 await uwr.SendWebRequest();
 
                 if (uwr.isNetworkError || uwr.isHttpError)
                 {
                     throw new Exception($"Failed to download asset bundle, http code: {uwr.responseCode}");
                 }
 
                 var bundle = DownloadHandlerAssetBundle.GetContent(uwr);
                 
                 if (bundle.IsObjectNull())
                 {
                     throw new Exception("Failed to download asset bundle, probably bundle with same file exists");
                 }
 
                 return bundle;
             }
         }