PC System Requirements speculation

Several articles mention animation glitches and the like, but most don't seem to bring up performance one way or the other. Most notably, IGN and PCWolrd reported some serious performance issues and bugs, including frame drops (sub-30), audio cut outs, visual glitches etc. PCWorld suspected that it was because the game was running at 4K.

On the more positive side, a Youtuber who had access to the game said on Reddit that Ultra wasn't stable, but that the game "ran perfectly" on medium-high setting on his "decidedly-average" PC. The guy from VG247 said on Neogaf that the game ran "slick as anything" and that "it seemed a much more competent PC version than any previous ME at a glance." He also said that the build they played was already a week old when they got their hands on it, and that in that span of time the devs had already fixed over 1000 bugs. 

So your best bet is to wait for Origin/EA Access for impressions.