Aside from the the fact that AI hits a lot harder now (it was indeed pretty laughable before), the FAS is still one of the single most maneuverable ships in the game, hands down. Her 50% turn rate is impressive, and her full speed turn rate is the best in the game. Her FA-Off boost turn is SICK. I can't speak for any actual nerf to her agility this patch as it wasn't in the notes. That being said, do be advised that *no one* can out pitch an Eagle, so it's normal for the really small ships to have an edge against you as you have a good deal more drift than them.
If you want pain, try flying one of the slow less agile ships like the FDS, FGS, Python, and Keelback. The forums are loaded to the brim with Python owners getting torn apart by AI this past week.