Dban1 Posted November 23, 2015 Share Posted November 23, 2015 (edited) Hi, I've been trying ways to increase PermGen for my private modpack with close to 400 mods, but the thing is that I heard too much permgen is bad and too little will cause severe fps drops after 10 minutes of playing (which is what I'm experiencing now). So is there a way to customise the permgen and permgenmax to 256 and 512 from the launcher? This is what I typed in the Java Arguments box exactly -XX:PermGen=256M -XX:PermGenMax=512M No colons, case sensitive, space sensitive. I'm not sure if this is working, but before I move on to another fix, is this the right way to edit permgen? Edited November 23, 2015 by Dban1 Link to comment Share on other sites More sharing options...
E4RU Posted November 25, 2015 Share Posted November 25, 2015 (edited) Try this one? -XX:MaxPermSize=500M Edited November 25, 2015 by E4RU Link to comment Share on other sites More sharing options...
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