HSV is a Modpack aimed at improving the experience of survival games, as it provides many tools to have games with much more complex progress and the refore require much more time in the game.
This is my first Modpack made, either for testing on private survival or a server, supplemented with a variety of mods that provide a fresher gaming experience and don't require as many resources, but the modpack for version for 1.18.2, it's more demanding on resources than the version 1.16.5.
But the newer version is for 1.21. and It has a different mods for change the client experience.
Optifine not compatible with version 1.1 or higher, because included others mods for better performance and optimization.