After suffering though too many sports games that were, basically, unwatchable because of the extensive and persistent buffering I figured out a workaround.
1. The board in my Roku Ultras (I have 4) are old. The price is for a new device, but the board is old.
2. WiFi is difficult and I have very fast internet speeds (2 gigabits per second).
3. My solution was to purchase new Google Chromecasts. The picture is much clearer and I have NO BUFFERING.
