Your router is the gatekeeper of your internet. If it isn’t prioritizing your smart TV, your sports stream will buffer when someone else opens TikTok.
Enable QoS (Quality of Service)
Log into your router’s admin panel. Find the QoS settings and set the MAC address of your TV or Firestick to the highest possible priority.
Always Use 5GHz WiFi or Ethernet
2.4GHz WiFi has range, but 5GHz has raw speed. If you are in the same room as the router, permanently connect your streaming device to the 5GHz band, or better yet, run a hardwired Cat6 Ethernet cable.