I plugged this into my project, and it definitely works a lot better than the other one I was using. I'm glad it's still being worked on! Without it, I'm getting about 38-44 FPS on my laptop of questionable quality, but with it I've got about 45-56 FPS. A definite improvement!
The only issue I've run into is with Napoleon's Event Text script (which lets you display text above an event), the same issue I ran into with the other anti-lag script. If I walk away from an event with text displayed, once it hits the edge of the screen, the text gets "dragged" along with me on the edge of the screen, but if I walk back to the event, once it's on screen again the text pops back into place.
If I turn "Optimize Sprite" off, then the issue goes away, thankfully, though of course I don't enjoy the maximum benefit of this.