Hi @shugart_lance 

Will the issue disappear if downgrade them to 5.1.1?

Are the CCTV system the only clients to the EAP? Do other clients have any Internet issue?

I tried downgrading and the RSTP works for CCTV, I have mobile phones, laptop and Smart TV connected to the EAP but they are working properly and has no internet issues. So, I don't know if the RSTP was disabled on the new update since I don't see it on the release notes.