YANFLY ENGINE MELODY CAUSES HELLACIOUS LAG ON MY MACHINE

Update:

Right now what I'm experiencing with my game (and it's really poisoning the fun of game design, because testing is tedious enough as it is without l.i.t.t.l.e. m.o.n.e.y.) is these *spikes* of lag. For maybe one minute (or less) out of every three the program will run fine, and then for the other two+ minutes e.v.e.r.y.t.h.i.n.g. on the screen just slows to a crawl. I can even see it happen in task manager. Normally, running an RMVX game.exe uses about 50% of the CPU (processor, I guess?) which results in 50-60% total use. However, when these miserable, frustrating lag periods happen the total CPU use jumps up to 75-80 percent, and it's totally unclear where the other 25 or so percent is coming from, as it does not seem to be coming from the RMVX game.exe. Battles are not without lag (and the more enemies, the more lag) but it actually seems worst on the map.

I suppose the systematic thing to do would be to see if this is happening on every game or just on mine. I'm worried it's specific to mine (I'm also worried about the alternative, as there were actually some games around here I wanted to play) and I've been thinking about an anti-lag script. While not *ridiculous* there is a rather large map and rather a lot of events going on in the area where it is lagging. (60 x 50, almost sixty events on screen.) I have however heard really bad things about anti-lag scripts (from WIP, actually, I think) so I'm pretty uncertain there. The thing that weirds me out is that one third or less of the time when it is running FINE. Like, what's up with that? If it's capable of running smoothly and fast, why is it lagging? What is happening periodically that's tying up my resources?

Anyway I really want a way to make this stop happening short of getting a more expensive computer (I have exactly $0). If it is just something like crappy event programming on my part, well, that would be a relief.

(I installed some adware protection software and it scanned for literally thirteen hours without finding anything, so I'm gonna go ahead and guess it's not malware.)

More Details:
When I start up/load the game, it is running at 27-30 FPS which looks smooth and normal. About thirty seconds later, the frame rate drops to 2-4 FPS. Two to three minutes later it comes back up to 27-30 for about thirty seconds. What gives? (Yes, naturally there are a couple parallel process common events running, but none of them are updating or doing anything in a cylical pattern that would time out to make sense with when the lag is coming in and out.)

Okay, I investigated further. This seems to be happening in all my RM games, the "fast/slow" thing. I seem to gain a few FPS from not running in test play, but not enough to make a real difference.

Numbers are approximate:

New Project, Indoor Map W/ Overlay, Test Play: ~27 FPS/3 FPS
New Project, Indoor Map W/ Overlay, Non Test-Play: ~30 FPS/5 FPS
New Project, Outdoor Map, No Overlay, Non Test-Play: 60 FPS/10 FPS
To Arms!, Non Test-Play: 60 FPS/10 FPS

So basically, most of the time RMVX games are running at 1/6th of the FPS they're reasonably supposed to be, which is basically hell. But about one third of the time they are running totally normally. I see the FPS do these wild up-shifts and down-shifts. It is very bizarre. I am going to try shutting down and restarting again. Hopefully this will just go away.

Update:

Okay, I am about ready to try uninstalling and reinstalling VX as multiple sources are telling me that will actually have a chance at fixing this. But I don't actually know where (if anywhere) on my computer that I have the information stored that I would need to reregister it. Can anyone help with this? Even just like, what the activation code should look like (I have a massive "notes" file filled with junk that is unlabeled) or where I'll need to input it.