RPCS3 performance upon start up

Yesterday I was playing Hatsune Miku Project Diva F 2nd and the game was running great(constant 30fps), after a while I closed the game and shut off my computer. The next day once again I opened the game, as the game started I realized the fps counter had declined by a fair margin 10-20 fps So I proceeded to restart the emulator which didn't fix the problem, so I restarted my computer which also didn't help. Then I opened a different game (Hatsune Miku Project Diva F) and the same problem occurred. I searched up my issue on YouTube but I couldn't find anyone with the same problem. By then I had checked if my computer was having an issue and nothing was out of the ordinary. I was very confused so I came to this forum.