[kde] Font corruption

I'm having this anoying problem with fonts.
Check it out:


Anyone having the same problem?
Sometimes I can make the window refresh in such way that the fonts get corrected in the process.
The window rendering also has some glitches. Pieces of windows disappearing, etc.
I changed to nvidia drivers 180.41 hopping that it would correct this, but no luck...

any ideas?

thanks. ___________________________________________________
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