I've uploaded a YouTube video here of what I'm experiencing after the latest update. It got slowly worse as I continued ot play until the point in the video where the cut-scene is triggered and gameplay resumes, at which point it's entirely unplayable.

https://www.youtube.com/embed/4XxMRatc_iI

I'm running an i5 3570 and a GTX680 on Windows 7. All drivers are up to date.

Just tried playing it again, got the same bug. So I reverted to an older save file, and the bug was gone...until the cut-scene ended. At which point all walls became invisible.

I think CDPR did not cook this patch thoroughly enough before taking it out of the oven.

I hate food that is not cooked properly:-)