Last April I made a video raising the major issue with SF6 and using relay connections instead of P2P on Steam.
Today I am happy to update you that this now have gotten fixed with the recent steam beta client update.
Find the video in the comment.
Would just like to add once again, with all these different setups and monitors etc at almost every event. It seems borderline insane that players are sometimes refused the ability to warm up, to even attempt to get used to the varying setups. Warm ups need to be non negotiable!