@flagrant99 I have since learned some things.
glsl Shader format available to OpenGL.
glslp for GLSL stack these shaders to create a combined effect.

Only a glsl will get reloaded not the glslp with video_shader_watch_files ON.

@buzz Appreciate this is an old post but anyone know hiw I access the standaone input settings O inca rebind the keys? I have a keyboard plugged into a Raspberry pi running Retropie to use this emulator. Going to check teh docs file now. Thanks in advance, DtM

Edit - I read the docs and found I can access the menu by pressing my hot key + X. Then went into the quick menu > controls > Port 1 Controls. Here I could change the button by highlighting iot and pushing my joystick right to cycle through the different button options. Hope this helps anyone in future looking for the answer.

@Efriim Batocera is very similar to Recalbox, since it was started by a former Recalbox team member - so I'd expect them to be very close.

Actually I really didn't solve it, the load time was so long initially i thought it was stuck.
It eventually loaded and after a couple reboots it loads normally now.
Sorry about not updating that.

Thanks!