Showtime have been hit with a lawsuit after millions of fans complained that their $99 stream didn’t meet their expectations.

Fans complained of suffering errors, constantly buffering streams, and poor or grainy video quality, as they tried to watch the world record cross discipline fight which saw boxer Floyd Mayweather overcome UFC champion Conor McGregor.

Around 1.5 million people streamed the bout, but many were left angry at the lack of quality and streaming issues which interrupted the show and made it impossible to enjoy the full fight.

Issues surfaced from the very start of the coverage and continued throughout the main event.

Showtime, the premium American cable and satellite network and part of the CBS Corporation, has passed responsibility for some of these issues as chief Chris DeBlasio urged those viewing via a cable or satellite feed to contact their provider, but Showtime have said that they will handle complaints from anyone who paid to view the fight through their website or app.

One such viewer, Zack Bartel, who paid to stream the fight in high definition on the Showtime app, said that all he saw was “grainy video, error screens, buffer event, and stalls”.

Showtime still claim that the amount of fans who experienced issues was low, claiming: “We have received a very limited number of complaints and will issue a full refund for any customer who purchased the event directly from Showtime and were unable to receive the telecast.”

The fight, which was one of the most anticipated of all time, lasted ten rounds as five-time boxing champion Mayweather overcame UFC’s most famous competitor.

As a result, the 40-year old maintained his 100% career record, extending it to 50-0.

Speaking after, Mayweather believed the fight “went to plan” as he allowed McGregor to tire whilst remaining defensive, before beginning to make his own move.

McGregor, however, believed the referee stopped the fight too early. He suggested that referee Robert Byrd should have let him wobble in the corner and made Mayweather put him down.

Another controversy surrounding the bout concerns those who were illegally streaming.

Millions are said to have watched the fight illegally and could find themselves in real trouble after reports emerged suggesting there may be a way to detect them.

A code which appeared every now and again during the fight is believed to be the key to the authorities tracking down these wrongdoers.