Had a Ubiquiti USG-3 prior to getting this device.  My USG would run at 100% CPU and ping response time would get up north of 1500MS when running a VPN tunnel through the firewall.  I installed PfSense on The Vault and ran the same tests.  This firewall runs at 6% CPU MAX when running the same tests.  So far I am very pleased with the performance.  Will update as I turn more features on.There was a screw loose in the case when I unbloxed it, but that was quickly fixed without issue.