All I have is optifine. And my FPS went from 80 to 100, but the constant FPS isn't the bug. The bug is that i have a very good computer with great FPS in minecraft 80% of the time, but there are massive FPS spikes in multiplayer every 8 minutes or so. This is happening to a very large amount of people, which is why i decided to post about it here as it seems to be a bug in the game.
Without resource pack: http://notepad.cc/share/n3h3S5jHYq
I did and I only found stuff from 1.4 and 1.5, and even then it wasn't the same thing. I'm very new to the site, so I kinda had a hard time finding it.
Yes.