i don't think that is an available option yet even in the latest builds, but you could try my fps guide if you're looking for an increase in fps or if your computer isn't strong enough to emulate at full speed
OS: Windows 7 Ultimate x64
CPU: Intel® Pentium® Dual T3200 @ 2.00GHz
RAM: 3GB
Graphics Card: Mobile Intel® 4 Series Express Chipset Family
Audio: Realtek High Definition Audio
DVD/CD Drive: HL-DT-ST DVDRAM GSA-T50N
CPU: Intel® Pentium® Dual T3200 @ 2.00GHz
RAM: 3GB
Graphics Card: Mobile Intel® 4 Series Express Chipset Family
Audio: Realtek High Definition Audio
DVD/CD Drive: HL-DT-ST DVDRAM GSA-T50N
