It would be offtop here about Debian and it's branches and current situation with them, just wanna hear from Nvidia when they even planned to fix this real regression in the driver.
Latest beta is the best from the bad for a while.
I fondly suppose that this update should reach Deb/testing fast because of it's importance.
Thank you all for your attention.
P.S. [offtop]My wife has nagged me completely after update because of this bug made interface unusable (so slooow responce down to hang).