Before, it either flipped continuously, or forced frameskip on. This
makes it so you can still draw frames, but skip actual flips.
This is useful when games draw things only in a single frame and reuse
later. It's also useful when measuring speed improvements if you already
get 100% speed on a device.
Doing it on each project made it possible for two to overwrite each other.
It's rare, but this could corrupt git-version.cpp.
This makes it run when Core is resolved, and also on Windows/Headless only.
It may still require two compiles to update, but that's not a new problem.
This setting only changes some internal values that are shown in tests not
to match PSP behavior. Removed, it now matches how the PSP works.
This setting wasn't really affecting any actual audio latency.
See #11844.
It appears that SDL2's kmsdrm driver ignores the swap interval setting
if the SDL context has not yet been created. Moving the call to after context
creation allows it to work as expected.
Fixes vsync when running ppsspp in a KMS context using the SDL2 kmsdrm driver
(which is especially useful for Raspberry Pi 4 B, but is also needed for other
systems including Raspberry Pi 3B via firmware KMS & Intel Haswell i965 via
KMS on x64).
