Please fast click "CHANNELS" for five times and the version number will appear in red. You should be using version 1.0.5(429) now.
The new beta 1.0.5(429) should fix SMB related issues. We haven't changed anything about AirScreen so far.
BTW, are the videos laggy when you stored them on your Quest and watch them locally?
Take you time and thank you for your longtime support!