I don't have personal experience to match yours.  If I load 50mg it is still hard for me to reach breakthrough when other do it on less easily.  I have never had the open eye visuals some report.  Much has to do with method and developing technique.  You may want to include some of those details.  What kind of spice, mg used, and method.  How well you think you have technique down.  That may be helpful to other that do have personal experience.