I have 8GB in cache and 0.7GB in user data.
Im on android.
I will say the recent speed improvements to the app have finally made it usable. It was so painful before
this post was submitted on 24 Jun 2026
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Go to Settings → Apps → Proton Drive → Storage.
Clear Cache
Inside the Proton app, remove any files set for offline access.
Had already done that. User data itself is 6 gigs, next to nothing in cache (though cleared it anyway the other day.)
And like said, nothing is under "available offline".
That's why it is so strange.