Absolutely baffled

[admin89]

Try Settings for best speed and keep 3xIR , no AA , 16xAF
For F-Zero GX : Right-click the game - Properties - Tick "Enable Dual Core" because "Enable Dual Core" option was disabled by default . Soul Calibur need "Enable Dual Core" disabled to boot
RE4 : I don't know , try : Right-click the game - Properties - Tick "Activate Vbeam"
Other than that , try using older build like Dolphin 3.0