So ive had lunar for a while now and it works perfectly fine, but recently it has massive lag spikes, it says its using 80%of my cpu, and using 2,000 mb of memory, (im only on an asus laptop but it runs fine usually) is something wrong with the settings or is my laptop just trash now? also im on 1.17
i'd actually reccomend trying protocol cheatbreaker as it gives you all capes and wings with some custom ones and also uses a lot let cpu than Lunar. But if you're on 1.17 just use optifine
Considering you are on a laptop trying to run a game that's on 1.17. I would assume that your laptop just isn't powerful enough now to run new minecraft updates.
Its the hardware acceleration. Try stop everything on your computer running by looking in task manager.