What frame rate was the Xbox One version of Forza Horizon 2 locked to?

The Xbox One version of Forza Horizon 2 was locked to 30 frames per second. Although the Xbox One hardware and the underlying engine could support 1080p output at 60 frames per second in suitable conditions, the finished game targeted a fixed 30-fps presentation.

Forza Horizon 2 was an open-world racing game, and its world had to stream scenery, roads, weather, traffic, and other gameplay systems while players drove at high speed. Playground Games and Turn 10 chose the lower, stable frame-rate target as a practical trade-off for maintaining visual detail and consistent streaming across the large environment.

This answer applies specifically to the Xbox One edition. The Xbox 360 version was a separate build led by Sumo Digital and differed substantially in technology and features, so comparisons between the two versions can cause confusion. The 30-fps lock also distinguishes Horizon 2 from later Forza releases that offered higher or selectable frame-rate modes on newer hardware.