It is 100% allowed. I just didn't do it in my route because I never could get it consistently. As for the frames, it is somewhere around 1-15.

If you're planning to run in an emulator, you can just use Kega Fusion (K-Fusion) and keep the video frame rate default as that is what the other runner used. It also shows FPS by default on the bottom left, which helps. I also went ahead and updated the rules to reflect this.

If you are curious though, TASVideos has exact frame rates listed http://tasvideos.org/PlatformFramerates.html