Playing video from Streaming Assets folder is choppy

I am trying to play a video from the streaming assets folder on android. I can get it to play but it is very choppy
I am trying to get the video and audio separate so I can swap them out(for multilanguage support) It works well but the video is choppy and the audio becomes desynced from the video.

Is there a method for preloading the video besided checking if it's prepared?
I have tried to wait for upwards of 30sec after it's prepared to let it "Load" but still pretty choppy

Code (CSharp):

1. public void StartVid()
2.      {
3.          string url = "file://" + Application.streamingAssetsPath + "/" + "video.mp4";
4. #if !UNITY_EDITOR && UNITY_ANDROID
5.              url = Application.streamingAssetsPath + "/" + "video.mp4";
6. #endif
7.          //We want to play from url
8.          videoPlayer.source = VideoSource.Url;
9.          videoPlayer.url = url;
10.          StartCoroutine(prepareVid(Path.Combine(Application.streamingAssetsPath, "audio.wav")));
11.      }
12.          private IEnumerator prepareVid(string file)
13.          {
14.              videoPlayer.Prepare();
15.              while (!videoPlayer.isPrepared)
16.              {
17.                  Debug.Log("Preparing");
18.                  yield return null;
19.              }
20.    
21.              UnityWebRequest request = UnityWebRequestMultimedia.GetAudioClip(file, AudioType.WAV);
22.              yield return request.SendWebRequest();
23.    
24.              audioSource.clip = DownloadHandlerAudioClip.GetContent(request);
25.    
26.              Debug.Log("Prepared");
27.              //yield return new WaitForSeconds(30);
28.              videoPlayer.Play();
29.              videoPlayer.started += (trash) => { audioSource.Play(); };
30.    
31.              request.Dispose();
32.          }

Thank you

 

@Tomas1856 okay I will ask there thanks!