Would you mind elaborating on what emacs in particular you're using? I use and love emacs but unfortunately the times I've tried to use it on windows it's been extremely unresponsive.
Woah I tried it again and it seems like it's working perfectly! It seems like the initial release for windows wasn't compiled with optimizations, so perhaps that's the issue I was observing.
Indeed that's the one that I used. For some reason, even just moving the cursor around the buffer was extremely unresponsive, it would take seconds for it to register a cursor movement. I'll have to figure out if it's some package I'm using.
https://www.gnu.org/software/emacs/download.html#windows