Prepare for potential toxicity, as Street Fighter 6 will include an indicator that demonstrates whether an opponent is playing on a wired system or with Wi-Fi. Despite having absolutely excellent rollback netcode, Capcoms programming obviously cant overcome a bad connection, and many fighting game fanatics feel players should use a wired Internet connection in order to ensure the best possible experience.
Source: N4G PC Street Fighter 6 Will Show Whether Your Opponent's PS5, PS4 Is Wired or Wireless