Other mods...

Here are some mods you can add to your installation that might give you more frame.

Java Optimizations

Optimizing Java by using custom arguments is good for improving performance, especially on the server side of Minecraft. You can find a really helpful guide to good flags and JRE/JDK in the following repo: https://github.com/Mukul1127/Minecraft-Performance-Flags-Benchmarks. Of course, don't forget to set your amount of RAM with the -Xms and -Xmx flags (or in the memory section of your preferred launcher), and remember that reserving lots of RAM does not mean better performance...