blinkstick is very slow on a raspberry

[thhart]

Communication is very slow. It takes nearly half a second to simply control 1 LED of my Blinkstick Strip (8 LEDs) connected to a Raspberry. Is there something I can do about? What is the standard time for it?

#/: time blinkstick --index=1 --set-color="red"
blinkstick --index=1 --set-color="red"  0,34s user 0,06s system 91% cpu 0,437 total