Good morning, Bob.
I'm very interested in your comment today. Actually, we have same issues that were reported in the Reddit community, and we didn't know exactly how to fix them. There's some solution I read on Reddit (but not working for me):
Use WiFi 6 instead with a 5GHz channel and put it nearby your TV.
Use USB to LAN (anything you can find on Amazon) to reach maximum 100 mbps (that's not really bad speed, imo).
Since WebOS is very laggy, you can use a TV box (Apple TV 4K, NVIDIA Shield Pro) and then use directly their ethernet port. It will pump up the connection speed
I'm going to buy apple tv 4k to fix it. Hope it useful for you