How to speed up compile time?

Hi, there, and thanks for creating Spike. I'm liking it and going down the path of using it to create a design system, but it seems to be dead slow to recompile, even just using the default template and starting a watch. I want to figure out whether I can configure the devserver to do hot reloading, too, but are there any tricks to make compiles faster? I'm talking about even a single line of added CSS. Thanks.