(Before anybody yells at me in the forums, I already asked in the MultiMC and OptiFine discords and in the MultiMC github. I couldn't get a straight answer, so I am writing this here instead.)

I tried getting legacy fabric to work with my optifine on MultiMC. I extracted the OptiFine jar as a mod. I checked and double-checked that I was using the right OptiFabric build, the right OptiFine version, and the right Java version, but for some reason, I don't see the OptiFine video settings.

I've started to pull my hair out trying to get it to work. Can someone help me here?

i have the same problem, i just cannot install Optifine for some reason. I know i had it on my old PC to have some aditional FPS, but on my newest machine im outta luck.

I fixed the problem! It turns out that the problem wasn't the mods, it was the fact that I wasn't running the latest fabric loader version. I fixed it by updating it. @HRM_Speedruns you said you have this issue If you use MultiMC then go to your 1.8.9 instance and right click it Go to edit instance Go to versions Right click on the Fabric Loader option and click change version Run your 1.8.9 instance again and see if it works It should work with regular fabric as well as legacy fabric but if you're not using MultiMC then idk how to help :/

of course u need optifine and optifabric for it to work and u also need the fabric api but it should work

well thats a way to have it on 1.8.9. The thing is that i want Optifine for the latest 3 editions bc after 1.17 my machine handles MC with 30FPS on optimal settings. Maybe because the world gen changed a lot