Has this been abandoned? I've been doing some testing.
Default orb and eXternal orb have similar issue of fps drops when minions are in last-hit Q range, but neither orbwalker casts spells on minions.
IC's orb does cast spells on minions, but the fps drop is so bad that the script will lag behind and start spam-casting spells on minions even if they are out of range.
I don't have Noddy's orb so haven't tested that.
Also, just a minor point, but there's no Q option for lane clear.