ok well first off id like to say that ive looked up some ways to make minecraft run lag free and tryed some. i gave more ram to java,ive lowered my grapics so it looks ok but not great,i also have reis minimap mod, and ive used optifine but when i use optifine i cant start up minecraft by that i mean that i log in to minecraft and the minecraft screen goes black.when i install up dates it workes just fine but is still laggy. i also have a 4gb ram in my computer idk if that affects it but i have 2gb that run java idk what to do so i have only been using the minemap and not optifine so if anyone could help that would be great.