Forza Motorsport 7 is going to be a bleeding edge game, and it is meant to be a showcase game for the Xbox One X, Microsoft’s superpowered console that is due for release later this year. However, it looks like the PC version is suffering from some issues, presumably due to poor optimization.
PC players noted upon playing the demo that the game is suffering from some form of unusual stuttering, which seems to be associated with uneven usage of CPU cores (with the game, in many cases, reportedly using only one core). Apparently, the issues have gotten serious enough that Turn10 is now investigating them.
Responding to a query made by WCCFTech, Turn10 confirmed that they are investigating the issue- hopefully, they are able to release a patch or a hotfix soon enough to address the problem. Maybe they can even get it done before the game launches in October on Xbox One and Windows 10 PCs.