Synthetic vision is enabled by following these steps.
On the PFD, find "PFD" above the 4th button.
Pressing that will give you new options. Press SYN VIS above the 1st button.
From there, you have 4 options to choose from.
As far as your fps, that could be anything from render settings to ortho scenery, to plugins installed. Try turning down some settings.
I can take a look at yoiur log file, but I need the one named log.txt found in the root folder.