Workaround for Downloading Workshop Mods
- Set up family view to prevent game from starting automatically
- Go to Settings > Interface > Client Beta Participation, choose Steam Beta and restart the Steam client.
This is only used to restart the Steam Client, it doesn't actually download the Steam Beta as it's disabled on GeForce NOW.
- After steam restarts, disable and re-enable any workshop mod that you've subscribed to, this'll trigger download of all of your subscribed mods.
Now you can play your games with workshop mods again. However you need to do these steps every time you launch the game.