Here is a great smooth FPS pack that will help you with your frames. I hope you enjoy it: I present to you the BOOM pack. Here is some media showcasing my pack: Thanks to Havoc for allowing me to use the videos. Give a like if you like the pack! DOWNLOA https://www.dropbox.com/s/nck729pvz3amw6a/Boom.rar?dl=0 BOOM FPS
Sorry? If you're wondering where to place the resource pack, here: press the Windows key and 'R' at the same time. Type in %appdata% and go into your .minecraft file and find your way to the resourcepacks folder. Finally, just drop the pack right in.
Welp, at least there's some difference. Have you messed around with Minecraft settings and Optifine to see if it will make a change in FPS?
I can't tell you what to do at the moment because I'm on my phone, will reply to you with more information later.