i drag a selection box around the guides i wish to work with... make sure you dont have 'show populated ' checked when styling as it can be confusing which are the guides and which are the hairs...and it eats resourses and slows down the process... i find it best to work with small selections, i usually make the hair a bit longer than needed and only worry about getting the tips where i want them and leave the hair room and use the  morph tools to smooth the rest into position then return to hair room and work with another selection...IMHO shvrdavids high rez cap is much higher rez than needed, he has a lower rez version that seems adequate for any med to long hairstyle... i may use the hi rez for short hairstyles like crewcuts or buzzcuts ...

 

:O)

Y'all have a great day.