in Forza horizon 4 online races the cars start teleporting and i have 50mb internet connection

My initial thoughts on Forza 5 were:

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Where are all the cars? as there don't seem to be many (No Porsches for instance)

Why so few Race Tracks?

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I didn't play Forza Horizons but my memories of Forza 3 & 4 are that there were many more cars and more Race Tracks.

I have checked it, it is not my hardware and driver problem.

This problem will only occur if the xbox app is connected to the Internet.

This problem makes forza horizon 4 no way to play online mode.

If there is really no way to solve it, can I refund the Forza horizon 4 Ultimate Edition?

I like Forza Horizon 4. Even if I’m not in the mood for the more competitive races, it’s fun to hop in your favorite car and just free roam around the map.

Forza Horizon 4 gets my vote.

you don't have to mess with the car set ups for the solo career side of it and it even automates upgrading cars for higher level races.

it also has breaking and steering assists if required

You will need an active Gold subscription to be able to play online, aswell as a stable internet connection.

Forza Horizon 4 will automatically join the online lobby if you have a gold subscription.