It happen by the heavy loading item in bag, the more item you have the more loading time. Open it bag per x time helps client not reloading again. I only can suggest players temporary solution, another things only can do by Shane. Sorry for my bad thing if I am not talk clearly, hope you understand. Bear in mind that PRO is in development and bug are expected, we attempt to best thing for performance, however, fix and fill out everything are need the time. It is easy than talk as Rome wasn't built in one day. Thanks and sorry again for your inconvenience.