[Bug 34052] The Witcher: Character models are sometimes invisible

http://bugs.winehq.org/show_bug.cgi?id=34052

--- Comment #31 from Deve  ---
(In reply to Nicky from comment #30)
> Bug occurs when using optirun/primusrun to run the game.
>
> If I use the intel gfx everything is fine. I haven't tried dri prime though

It also occurs with nvidia prime but much more rarely.

@Austin English
> There are multiple bugs, it appears. Likely your issue is either with the 
> bumblebee driver, or btrfs.

I wrote about btrfs because someone other said that it occurs much more
frequently on btrfs. I suppose that some kind of data must be loaded fast
enough. If it's not loaded on time, then we see this bug. It's because I wrote
that ext4 is faster file system.