Why aren't my Xbox achievements unlocking?

In Forza Motorsport 6 and Motorsport 7 I unlocked the> 400 km / h success (I drove about 410 each).

But the success is not unlocked even though it says 100% and I've just made it.

Other achievements are easily unlocked in this and other games, but neither of them.

Does anyone know what the problem is and whether you can do something other than wait and see?

Thanks in advance.

Pictures as evidence.

Sometimes that just goes crazy with the successes. Have you ever cleared the console's cache? So hold down the xbox button on the console until the console shuts down and then take it off the power for about 30 seconds and then start the game? Or uninstall the game and reinstall it? If nothing helps then you can really just wait, the successes can suddenly pop up when you gamble something else, I've also had several times