Apple TV 4K keeps dropping WiFi during live sports

My setup: ATV 4K (2022) connected via 5GHz WiFi. Router is in the next room (about 15 feet away). Netflix streams 4K Dolby Vision perfectly fine. But when I watch IPTV (specifically live sports with high bitrates), the WiFi just randomly drops out entirely and I get a 'No Network Connection' error. Have to restart the Apple TV to fix it. Anyone else?