Hey MichiDieRakete, thanks for reaching out and welcome to forums!
I've watched the video footage you've provided and can see exactly what you're referring to.
This is indeed an issue and I can see that the speed is dropping fairly consistently regardless of the terrain.
Are you using keyboard by any chance? If so, would you be able to try and switch up your key bindings to anything else, just for testing purposes.
If you happen to be using controller however, try launching it whilst having unplugged from the cable and then plug it in once it's all loaded.
Keep us updated!
I've watched the video footage you've provided and can see exactly what you're referring to.
This is indeed an issue and I can see that the speed is dropping fairly consistently regardless of the terrain.
Are you using keyboard by any chance? If so, would you be able to try and switch up your key bindings to anything else, just for testing purposes.
If you happen to be using controller however, try launching it whilst having unplugged from the cable and then plug it in once it's all loaded.
Keep us updated!