Not all computers are equal. But from the Core 2 Duo to the i9 Extreme, there's a cool vanilla modpack you can try. Offers support for almost all multiplayer servers except Hypixel. BUT WE HAVE A PACK FOR THAT TOO! Computer can't handle even MC++? MC++ LITE. Need support with any of these packs?
Open an issue report on CurseForge, or reply to this thread.
Minimap & Waypoints
Re-Authentication for no Invalid Sessions
The packs are constantly updated with features, bug fixes, and stability updates.