Just a "small" update: I did my (almost) daily business and tried it again 2 minutes ago with high performance settings and...
it works! I don't know why, I did not change anything but today it works somehow. Hopefully it will stay like this

At least its good that you got it working again with MP3. Yes, this is the big mystery why it is not working anymore. Perhaps DirectX11 does not support this switching either. But according to the link I posted earlier, AMD and Microsoft have dumped the support for the Radeon 6770M and Intel HD 300...

So, MP3 works like a charm with both graphic cards. In both cases, the Intel 3000 is displayed in the advanced settings of the launcher. But I can clearly see the difference between energy saving and high performance in the fps. So the AMD card is used with high performance settings... But what is t...

No, I can't force my system to use only AMD card, also not in BIOS. There is no supported CCC version for my graphics which allows me to use a fix mode. There was a leshcat driver I used back in the days with Win7 with which I could force my system to be fixed to the AMD card (I used it as i had pro...

Thanks for the tries even if they don't succeed. What makes me wonder, in the log it still uses the Intel video chip, and fails to load some shader files ("GpuCache_D3D11_SM0.zip") which don't exist at all, also because the Intel chip does not support them There are files only for the adv...

Could you try the debug version of Maniaplanet and paste the content of the logfile here? There is a link to the debug version in the "useful links" my signature. Btw. did you also add maniaplanetlauncher.exe to the list of applications? Iin case it does not properly recognize your video ...

DirectX12 is installed. So I think this should also not be the problem.

Miss wrote: ↑28 Aug 2019, 22:40 Biggest difference between MP3 and MP4 is DirectX, which was upgraded from DX9 to DX11. Maybe that helps you troubleshoot.

I'll check which DirectX is on my Laptop this evening. Thank you for the Info!

So, I have a new broad hint. I again reinstalled the game with a very old installation file I've found on my harddrive, which just installs the basic tm2 stadium game (at least it it is called ManiaplanetTMStadiumSetup.exe and is from 2014). It CAN be started with high performance settings, so it su...

Yes, you are right. It's, atleast in my case, the CCC. There I can switch between the graphic cards. If I chose the Intel3000 graphics everything works like a charm, however only with 10 fps. If I chose high performance the Radeon 6770M is used and the game does not start after launcher. So when I p...