elfin8er Posted October 15, 2014 Share Posted October 15, 2014 I'd like to install a different version of Optifine to use with Tekkit Classic. I believe the Multi-core version of Optifine will give me a better performance, so I'd like to install that rather than the version of Optifine that comes with Tekkit Classic. Is there any way to install the Multi-core version of Optifine over the one that's currently installed? I tried copying the Multi-core Optifine classes into the modpack.jar and over wrote all files, but Tekkit was no longer able to launch. Anybody have any suggestions? Link to comment Share on other sites More sharing options...
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