I tried the streak, sparkle and furry? (default and then one of the black sparkly ones) brushes a few times but every time I use it mypaint stops reacting and cpu usage goes up to 100% Closing the app gives a not responding dialog. Task switching etc does still work. Is this brush so amazing that it will need more than a minute of full cpu to draw a line or is this a bug? -- edit -- Some more testing shows that these brushes just take a very long time to draw. Perhaps put them in a separate set of slow brushes? prevents people from wondering if the app crashed or not