Hello, sorry to reply to a very old topic, but I've finally found a nice 1080p scanlines config fro VICE.
Enable CRT emulation
set the following color controls
gamma 3000
tint 1000
saturation 1310
contrast 1210
brightness 1000
set the following CRT emulation config
scanline shade 730
blur 500
oddline phase 1240
oddline offset 840
Enjoy, but please be aware that without overclocking your Pi3 you will not get 50FPS with CRT emulation turned on