When Digmbot played Forza Horizons 3 on stream, he immediately noticed that there were some... issues with the game's running on PC. To put it mildly. Seems like more people have had similar issues, because an incoming patch will hopefully improve stability across a number of PC setups.
The October 14 patch will go live at 7pm PT (3am BST) and Turn 10 say that the update will include "numerous stability and performance improvements for the game across a variety of Windows 10 PC hardware configurations, as well as fixing numerous gameplay issues to improve game stability on PC." They also say that performance and stability will be a top priority for them and Playground Games going forward, being the focus of future updates too. So hopefully fewer crashes for PC players from now on.
Of course, other things are included in the patch and that includes your standard bug fixes, some rebalancing of certain factors and the introduction of new cars to the Tombola level-up spins.
For the full list of fixes and changes, check out the post on Forza's site here.
