UX: Improve reactivity

I'm not sure why exactly (haven't debugged it), but it seems that opening the panel and every refresh takes multiple seconds to complete for information that should be available in sub-second time.

In my experience, reaction speed of a website/application/plugin is a massive determination of positive user impression, and frankly while I use the extension frequently and find the features impressive, the (unnecessary) waiting is a constant dread.

Please speed up the extension substantially - more frequent fetches, sub-second fetches otherwise (and there shouldn't be much reason to have sub-100ms + network latency), and more caching where it makes sense - it's fine if it takes a second to update if I can immediately interact even with the previous state fully.