Diagnosis
The TV's wireless connection is unstable. This is a common gripe with many smart TVs, often due to a power-saving feature that puts the Wi-Fi module to sleep or interference from your router's signal band.
How to Fix It
Let's adjust the TV's network settings. Press Settings on your remote, then go to All Settings > General > AI Service. Turn OFF "AI Recommendation" and "Content Recommendation." Next, go back to General > Energy Saving and make sure all energy saving modes, especially "Screen Off" and "Auto Power Off," are disabled. Finally, go to Connection > Wi-Fi Connection. Select your network, choose "Advanced Settings," and change the IP Settings from "DHCP" to "Static." You'll need to enter your network details—if you're not sure, check a connected phone for the Gateway, Network Prefix, and DNS addresses.
If That Didn't Work
Your router might be broadcasting a combined 2.4GHz and 5GHz signal with the same name. Log into your router's settings and temporarily disable the 5GHz band. Connect the TV to the 2.4GHz network only, as it has better range through walls. See if the drops stop.
Heads Up
A wired Ethernet connection is always more stable. If your router is near the TV, using a cable eliminates this problem entirely. The TV's Ethernet port isn't gigabit, but it's plenty fast for streaming.