It seems that many gamers have been complaining about encountering issues when playing Halo: Reach on the Xbox One. Namely the issues seem to have to deal with frame rate where frame rates drop to as low as 10-20fps. Some gamers claim that even if their older console like the Xbox 360 can handle the game better at 25-30fps.
Microsoft has since issued a statement to the folks at Kotaku which reads, “We’re aware some users are experiencing issues playing Halo: Reach via Xbox One backward compatibility. The Xbox engineering team is currently looking into the issues and are working to address them.” Chances are there is probably a bug that is causing the frame rate issues, as opposed to the Xbox One not being able to handle it.
Halo: Reach is one of several Xbox 360 games that Microsoft has made backwards compatible with the Xbox One. So far it seems to be the only game that is facing issue as other titles appear to run just fine, so if you are playing the game, you can rest assured that a fix should be coming soon.