We've noticed heap space issues with TC10, we had to temporarily disable the plugin as it was constantly maxing out the resources, we use snapshot-20161503143845.
Pull Request settings:
VCS Type: Bitbucket
Base branch: dev
VCS Settings:
Default branch: dev
Branch specification: +:refs/heads/*
TC usage before:

TC usage after disabling the plugin:

does anyone have any ideas/workarounds?