Before starting it, install CodeChickenLib and add it to the mods file of this modpack
Recommendations:
At least 4GB RAM allocated
Lower your video settings in "performance" and "quality" sections in the settings when you start this modpack (Not a need, only if you have lower computer)
Add Optifine to the mods file of this modpack
Future Ideas:
May add mods like:
Ender IO
Traincraft
Thermal dynamics
Betweenlands
Railcraft
Roots
Thaumcraft
Tropicraft
Undead Expansion
Draconic evolution
FTB Quests
(Most are not updated yet to 1.16.5)
For any other ideas how to improve this modpack, let me know it the comments :)