LOL how can you post up all this and still believe that you are right? Adaptive sync was added to the display port standard in May 2014. An optional part of the standard and still is an optional part of the standard. It was never added to the eDP specification. eDP is for internal connections like you said and has a different set of requirements than the display port standard. We are on display port 1.4a but embedded display port 1.4b and that was released back in 2015. Display port 1.4 only came in 2016. Just because something exists on one standard doesn't mean it exists on the other. There are different features to both and different standards. But, hey, knock yourself out, Go through all the specs of the eDP and I guarantee you that you won't find any reference to "adaptive sync" been added or been used as part of the specification. But if you find something that shows the term "adaptive sync" been added as part of the eDP standard, I will apologise and admit that I was wrong. eDP and DP are different, they might have the same governing body (VESA) but, you said it yourself, one applies to internal connections and one to external and as such have different requirements.