Ok, I have tracked it down!
I can't say for sure but I believe at some point there has been a change in the default settings to use EFB ---> RAM
For myself, I stumbled upon switching to copy efb to texture and disabling CPU->EFB acces and most of my games are back to awesome FPS again
Now if I could just figure out how to get my wiimote to work in milestone shooting collection 2 I would be over the moon!
I can't say for sure but I believe at some point there has been a change in the default settings to use EFB ---> RAM
For myself, I stumbled upon switching to copy efb to texture and disabling CPU->EFB acces and most of my games are back to awesome FPS again
Now if I could just figure out how to get my wiimote to work in milestone shooting collection 2 I would be over the moon!