Heroku RAM not increasing with upgraded dynos

I have a massive function i have been calling manually through the heroku rails console. I have been receiving the error rapid fire in my logs:

2015-06-22T14:56:42.940517+00:00 heroku[run.9877]: Process running mem=575M(112.4%)
2015-06-22T14:56:42.940517+00:00 heroku[run.9877]: Error R14 (Memory quota exceeded)

A x1 dyno is suppose to have 512 MB of RAM. I upgraded my dynos to x2 under the impression that it would double my RAM. I restarted my dynos and am still receiving the R14 error. Does it take more than an hour for the new dyno parameters to "kick in"? Can someone explain what i am missing?

Thank you