Here’s the thing, XBVR won’t play the funscript for unmatched videos unless the script is downloaded to your headset. If the video is matched to a scene, the funscript will play from wherever it’s located. 
Stash doesn’t make you do any of this except have the files named the same, but Stash forces you to use an absolutely worthless web player. 
https://discuss.eroscripts.com/t/help-with-oculus-quest-mac-handy/51676/18?u=burtreynolds