I now consider Height maps to be a big downgrade

OMG I'm so sorry for these recent rants. Everything is working great now!!! I was so annoyed by these brush strokes problems and It seems all these bugs were caused by previous versions of Reb7. Resetting  helped!

@RoksanaDiamond: "There should be still some texture presented even when we turn ON "smudge on paper bumps"."

I have no problem getting lots of texture with smudge ON. But, as I showed earlier, 'Paper Texture Strength' needs to be set higher with Heightmaps than with it off. The texture just looks different (and to my taste often worse).

There might be an issue on your system, where the speed of the stylus isn't detected properly. Open the curve editor 'Speed' tab (see image below), move the stylus over the canvas and observe the vertical line that indicates current speed. If for some reason the line hits the right end even at lower stylus speed, then you'd get overly smeared strokes. Lower the curve and try a stroke again.

dreamkeeper, I resetted Reb7 and deleted old versions of programm and canvases from AppData. Majority of things I complained about'  just dissapeared. 

I'm  out of words, really, lol

In addition my blurry canvases I experienced are not as blurry (or not blurry at all) anymore. 

Hi RoksanaDiamond,

We're happy resetting helped! Next time this happens, please send us the settings.ini file (Help > Show Library folder... > Data).
Maybe some combination of settings is causing this problem.

Roksana, when you say reset to basic what are you referring to? I'd like to know this in the event I experience problems. I have noticed some differences in brushes I have imported from Rebelle 6. I will have to check what Dreamkeeper mentioned about the graph settings for paint and blend, etc.

 HEllis, in my case it wasn't only brush problems, but also very blurry canvas, nanopixel and texture problems. 

Check the "watercolor edge problems" topic, I described Rebelle reset there.