Please provide some GFX Card acceleration guide and special tester, or just show us how to use external GFX terster to find out if TeamViewer will use this GFX Card, ...... and HOWTO . Guide how to check if a computer specyfication is enougth to have effective work with TeamViewer.
I think internal tester will be the best solution, that any device (Windows, Android, iOS, Linux) will have the same testing procedure and comparable results.