Other Desktop Environments

My whonix is very very slow. How can i remove kde and all these fancy things? I want openbox as my only windows manager. I see there is option to build from source, but right now it’s too complicated for me to do that.
Thank you for great work to help people achieve freedom!

For general information about current state of things (linked from main page link DOCUMENTATION Whonix ™ Documentation):

For build documentation (linked from main page link DEVELOP link, which links to Dev/Developer Portal - Kicksecure):