I would like to see the rate setting added to the URL arguments that can be set before starting a kiwi.
Perhaps r0 to r4 if they are not taken.
I tested on some devices that had previously not been able to support the program for more than a short time and it seems that with the waterfall off, it is possible to listen indefinitely on my old tablet. It used to run for a while and then hang - probably just needed too many resources to keep going.
Setting r0 before opening would save the mad dash to move the slider before the window freezes.