Hi guys,
Sorry for delay in responding!
Our 3850 stack is running 03.02.03.SE, so sounds like we need to upgrade.
Cisco can't seem to build a stable release for this switch model! Every time we've had to upgrade, there has only been one version to go to, and every time we have an issue, its due to buggy code and we have to upgrade again.
We've literally had issues with every single release for this switch. Previous big one was the switch would crash frequently and need constant reboots.