Default FramebuffersCPUConvert to true/enabled (performance seems similar, does nothing if FramebuffersToMem is disabled).
Fix framebuffer pseudo-blitting when width and height of the emulator's frame are scaled at different factors (i.e., user enlarges one side of the window).
Fix framebuffer blitting problem when texture dimensions are a different ratio than the PSP screen (e.g., square).
Update memory at the start of every frame, or synchronously mid-frame when a framebuffer is set twice as render target; code cleanup.