Some things you might quickly check is look at the wireless network properties and see what the Link Speed is.  Beyond that, you might open the Task Manager and watch the streaming speed on the performance tab. Killer has, over time developed a reputation of monitoring bandwidth and limiting it under specific conditions.  If you are running their software, you might check to see if there is a way to increase the speed or that service.   You can do the same thing in Windows and your Router.
I have a Dell XPS 13 9305 with Killer(R) Wi-Fi 6 AX1650w 160MHz Wireless Network Adapter (200D2W).  If I connect the laptop to my Wi-Fi, the TV streaming freezes and cuts out randomly.  It is like the Killer is creating a surge interrupting the TV streaming.  All other devices show no problems.  If I turn OFF the Wi-Fi, the TV streaming runs uninterrupted.  I can run my other laptops (MacBook Air and HP) with zero TV streaming interruptions.  Wi-Fi service is provided by Cox and router/model is Panoramic Wi-Fi. This morning I updated all the drivers on the Dell XPS 13 9305.  I have attempted to connect to the Panoramic Wi-Fi settings so I can update the firmware.  All the username/password combinations I have tried don't work.   Any ideas why the Killer is interrupting the TV stream?
Killer Wi-Fi causes Wireless TV Streaming to randomly freeze