Forza Apex was an unmitigated disaster when I tried it. Before I could even get halfway around the track, the animation had slowed down and become so sloppy that it was in the single digits in frame rate. I couldn't quit it because the menu wouldn't respond. I finally had to ctl-alt-del to get to the task manager to end the program, but even getting that window to appear took between 5 and 10 minutes. I hadn't played Apex in months, so I have no clue what happened. I'm going to uninstall and reinstall it to see if that changes anything.
I never saw anything like that.