1. Windows 7... have compatibility issues everywhere.
2. Running as administrator,
3. changing desktop composition,
4. etc is a real hassle.
5. Having games crash because of desktop composition is not fun either.
6. Windows 7 has a lot of problems, and is not a very powerful OS.
1. Elabortate
2. Right click. It isn't hard.
3. Personalization > Windows 7 Basic
4.
5. Composition's disabled on fullscreen games. Also what games and how do you know it's DWM?
6. Contradicted yourself. It's the only OS that can apparently do what you want it to without "3rd party" software.