New issue 2785: PyPy3 slowdown when .pyc files are present https://bitbucket.org/pypy/pypy/issues/2785/pypy3-slowdown-when-pyc-files-are-present Maciej Fijalkowski: Instructions here: https://gist.github.com/1st1/57d979e1e58948a7e523754a3d02a57d