Alright, thank you for your replies.
20MB is not a problem. A friend built a similar plugin using iPlug2 and his
plugin has 1,1MB, so we were just wondering if I made some newbie mistake. :-)

Hi everyone,
this is my first post here.

I tried out HISE and made a very simple plugin with 3 buttons that
switch a lowcut between 3 different frequencies. No graphics, no
samples or anything. For the lowcut I use the 1st order filter integerated
in HISE.

When I build this VST2 plugin, it is 22MB big.
Seems a lot for such a simple plugin.
Am I doing something wrong...?