Update post! (One of those situations where you are allowed double posting).
So I found a solution to the problem, but I don't know if I will be able to explain it well here. If you don't understand what I post, follow this (insert hyperlink here of:
http://www.minecraftforum.net/topic/1872513-fps-in-161/page__st__20 because I have no idea how to do it
) thread I found on the Minecraft Forums where the solution is quite the same as Forairan did in his thread a while ago. I did follow Forairan's tutorial earlier, but having the old launcher and the new launcher prevented it from working properly.
So like it says in those guides, your Minecraft is running off the Integrated Graphics and not the NVidia or whatever graphics card you have like it should. There are 2 ways to change it, one in Forairan's guide or you can RIGHT click on the Minecraft Launcher and it should say something like "Run with graphics processor". Hover over that, and click on "Change default graphics processor...". Then you can change from Integrated Graphics to the Graphics card you should be using.
I had done that before making this thread. It turns out the problem was that I couldn't run the new launcher on the NVidia graphics card, because if I tried, it would redirect me to the old launcher. So I deleted the old launcher, and now the new launcher can use the NVidia graphics card perfectly fine.
Hopefully that helps some people