I guess your computer is probably better than mine. I usually get 60fps on 800x600, but there are times where it will drop. I know it's not cpu related because it actually sometimes uses less cpu when the game slows down. Can you do me a favor and try using an even higher resolution to see if it starts slowing down? The ultimate test will be turning off the fps limiter and seeing if there's a significant difference. I usually get at least 200fps, but with combo counter, I get like 70 LOL. I'm just really curious whether this problem is just on my end or not.
Lol a bootleg fix to the number problem is to load 1 match with 4 players and the numbers will go away. Also, this program was only designed to display the combo counter in VS mode, because I'm guessing Hijiki only had the VS mode addresses. I might try to make a code that clears the numbers, but I can't guarantee I'll be successful.