Like playing the same two notes over and again. My inside is significantly faster than my outside picking when doing this. It isn’t even a weird preference thing because for a long time my outside was better, but at some point my outside stagnated and my inside leapfrogged it.
By the most part I don’t see this problem in normal playing. Like I think I could play the glass prison arpeggios cross picked more or less at speed. I could also play a random five string arpeggios up and down without noticing a problem. It’s only when I hyperfocus on crosspicking between two strings do I notice the deficiency.