How to install OptiFine into Hexxit [Mac] in Hexxit Discussion Posted August 22, 2013 I figured it out! Will be posting a tutorial soon. I have Hexxit running with Optifine D5 with SPhax texturepack again. So perfect!! This is on the Mac correct? And you have confirmed that Optifine is indeed installed, and functioning correctly? If so, I eagerly await your tutorial, so that I can give it a try! Oh! Don't leave us hangin'! We'll look forward to your tutorial, but what was the gist of the solution? I agree, I have been trying to get Optifine into Hexxit since late June…because of the issues with Hexxit/MC, Optifine & Mac (lag is the killer) I have essentially given up trying to play Hexxit. So anything new that can be tried would be really good!