My router notified me of the newest firmware 1.3.3 Build 20230719 rel.78410. I noticed that the firmware has not been posted to the tplink website understanding that this is normal and could take a few weeks to post. However, after updating, my normally stable devices like my 10 echo dots started disconnecting very frequently. Did a total reset of the router and noticed the same behavior. Unplugging and re-plugging the devices did not help. Also, moving the devices to different areas of the house made no difference either. After monitoring for a day or so, the disconnecting was noticeable as the devices would take up to 3-5 seconds to respond when normally they were instantaneous. Checking the connection page on the router did show a disconnect between the router and the device because the device's duration was changed to 0. None of the devices were stable past 30 minutes. The one thing I did not check was whether the devices were ping ponging between the 2 5ghz channels. I downgraded to 1.3.2, reset the router, and have had no issues at all.  All devices are now 3 days with no disconnects and no issues with delay.