Greetings. Recently, my Tekkit Classic has decided that 15GB of RAM is no longer enough to play multiplayer, despite never having a problem until recently. I have searched the Internet for answers, only to find "solutions" that work for some people and not me. I would be extremely grateful if anyone could post a solution other than changing the amount of memory dedicated to Tekkit because I have tried that and it doesn't work.
Thanks.
P.S. Also, if you post a solution please EXPLAIN it rather than bombarding me with technical terms.
P.P.S I am on a Windows 8 desktop with 16GB RAM and 1TB internal memory. I have the latest Java (7u51).