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I have three LB130s and two LB110 bulbs set up in hard-wired light fixtures, connected via a Netgear Nighthawk AC1900 running current firmware. I am having constant disconnect problems with both bulb models, with disconnects sometimes happening within just a few minutes. The only way to bring the bulbs back online is to remove and reapply power; they'll power on (and light up), within a minute or so they'll be back online.

I've spent the better part of a week trying different things to attempt to keep the devices online, all without success:
[*]Verified firmware is up to do using Kasa.
[*]Confirmed firewall rules allow outbound access.
[*]Set 2.4GHz access point to "failsafe" settings (RTS/CTS settings, Fragmentation)
[*]Changed 2.4GHz wireless to different channels (1, 3, 6, 7, 9, 11) to attempt to eliminate the possibility of interference.
[*]Relocated my wireless AP to ensure clear line-of-sight to all bulbs.
[*]Set DHCP reservations for the bulbs.
Symptoms:
Devices appear offline (grayed out) in Kasa.
[*]Bulbs remain in operating state when they lose their connection (if on, they stay on; if off, they stay off)
[*]Unable to control devices in Kasa - device offline or out of range error.
[*]Bulbs do not respond to 'ping.'
[*]Bulbs come online - every time - perfectly after power cycle.
My feeling is that the bulbs are either going to sleep or otherwise failing a "keep-alive." I'm running a constant 'ping' from my desktop to see if that helps keep the bulbs online. Anyone seen this? Anyone have a solution? (TP-Link - perhaps a firmware problem?)