Preview colors switch to a very dull desaturated color WHILE editing, but the image is really fine.

[Shoot Me Now Photography]

Since this last update, as I am editing, especially when applying radial filter or using a brush, my colors change to a gross, desaturated version,  and back, several times.  If I export, I get the right edit, but it is annoying!  Also, everytime I import it tells me smart previews are not built.  Any help?  Here is an example....  

[dj_paige]

What uipdate are you referring to? Please use the version NUMBER.

Please provide the following basic information:

[Shoot Me Now Photography]

13-1

[TheDigitalDog]

First, try disabling GPU in the preferences (Preformance tab). Any better?
If not, recalibrate and build a new ICC display profile, the old one might be corrupted.
If you are using software/hardware for this task, be sure the software is set to build a matrix not LUT profile, Version 2 not Version 4 profile.
If turning OFF GPU works, it's a GPU bug and you need to contact the manufacturer or find out if there's an updated driver for it. 

[Shoot Me Now Photography]

Ok not the GPU.  I will try the ICC (after I figure out what that is!!!)  thanks