First off, please post what is the exact model of CPU that you have.
You will have sound issues if the game isn't running at fullspeed. Try switching over to the OpenAL backend and increase the latency.
As for the saving issue, you might not have admin rights to the Dolphin Emulator folder in "Documents". Right click on the Dolphin Emulator folder and click on properties to see if you have permission to read and write from it.
Make sure you:
1) have all your drivers up to date, DirectX web installer is up to date, installed all Windows Updates, latest version of Visual C++ (2013), and latest drivers from Nvidia.
2) are on the OpenGL backend, and have the Vertex Streaming Hack enabled under Graphics>Hacks (OpenGL only)
3) have your computer set to high performance under Power Options in Windows, and have Dolphin in a high-performance profile in Nvidia Control Center, with power management set to maximum. (don't use Dolphin to set your graphics card, leave it at the first option, Nvidia will take care of switching over for you): https://forums.dolphin-emu.org/Thread-unofficial-laptop-performance-guide
4) Try the latest dev build (currently 4.0-865). There's no Vertex Streaming hack because of other OpenGL 4.4 enhancements.
Game Specific:
Rogue Squadron III: Not currently playable: https://forums.dolphin-emu.org/Thread-gc-star-wars-rogue-squadron-iii-rebel-strike?highlight=star+wars
Rogue Squadron II: Still pretty buggy https://forums.dolphin-emu.org/Thread-gc-star-wars-rogue-squadron-ii-rogue-leader?highlight=star+wars
Super Mario Sunshine: You need to configure the L and R analog triggers to an axis
Midway Arcade Treasures: You need to change the MMU to on under the games properties (right click) https://forums.dolphin-emu.org/Thread-gc-midway-arcade-treasures?highlight=midway+arcade
Midway Arcade Treasures 2: don't think this game works https://forums.dolphin-emu.org/Thread-gc-midway-arcade-treasures-2?highlight=midway+arcade
You will have sound issues if the game isn't running at fullspeed. Try switching over to the OpenAL backend and increase the latency.
As for the saving issue, you might not have admin rights to the Dolphin Emulator folder in "Documents". Right click on the Dolphin Emulator folder and click on properties to see if you have permission to read and write from it.
Make sure you:
1) have all your drivers up to date, DirectX web installer is up to date, installed all Windows Updates, latest version of Visual C++ (2013), and latest drivers from Nvidia.
2) are on the OpenGL backend, and have the Vertex Streaming Hack enabled under Graphics>Hacks (OpenGL only)
3) have your computer set to high performance under Power Options in Windows, and have Dolphin in a high-performance profile in Nvidia Control Center, with power management set to maximum. (don't use Dolphin to set your graphics card, leave it at the first option, Nvidia will take care of switching over for you): https://forums.dolphin-emu.org/Thread-unofficial-laptop-performance-guide
4) Try the latest dev build (currently 4.0-865). There's no Vertex Streaming hack because of other OpenGL 4.4 enhancements.
Game Specific:
Rogue Squadron III: Not currently playable: https://forums.dolphin-emu.org/Thread-gc-star-wars-rogue-squadron-iii-rebel-strike?highlight=star+wars
Rogue Squadron II: Still pretty buggy https://forums.dolphin-emu.org/Thread-gc-star-wars-rogue-squadron-ii-rogue-leader?highlight=star+wars
Super Mario Sunshine: You need to configure the L and R analog triggers to an axis
Midway Arcade Treasures: You need to change the MMU to on under the games properties (right click) https://forums.dolphin-emu.org/Thread-gc-midway-arcade-treasures?highlight=midway+arcade
Midway Arcade Treasures 2: don't think this game works https://forums.dolphin-emu.org/Thread-gc-midway-arcade-treasures-2?highlight=midway+arcade