.5ohm.......Hmmm
Try Pulse Vaping. If you have good Hi drain batteries the Omega can heat up very fast.(coils)
I'm running my Omega at .67ohm Quad Coils using 6mg Strawberry Ice Cream. I find with roughly 2 sec. bumps I can pull 6-8 second draws nicely. I can even reduce the air holes by about 1/4 offset.