Bluetooth and 2.4 GHz Wi-Fi share part of the radio environment. Coexistence is designed into many devices, but a crowded or poorly positioned setup can still behave differently under load. Do not assume every wireless-audio problem is the internet stream.
Separate audio from media delivery
Compare the television's own speakers with the Bluetooth output while keeping the video unchanged. If only the wireless audio breaks up, investigate that local link before changing the streaming server or subscription.
Review placement and supported bands
Keep devices positioned according to their manufacturers' guidance and consider a suitable 5 GHz Wi-Fi connection where available. That is a comparison, not a guarantee. Walls and distance may make another arrangement more reliable.
Record the repeatable condition
Note whether the issue appears only with a particular accessory connected. Update through trusted channels if the manufacturer provides relevant guidance. Avoid disabling several radios at once, which removes the ability to identify the actual contributor.