WHile lately i had some fun with ar10 (there is one map which probably will go into ranked soon marked by HDHR dream... ya know, easy patterns, good song, nothing to expect more), playing ar8+hr start is always a failure, total.
So i went into Index ask, started reading, page after page, analyzing his answers and at the end, i am warming up by playing 5-6* relax+hr. Somehow helps to get my eyes moving into proper notes. Ya, index da god, he knows best how to do this shit. Still noone exept him HR Last Journey / HOOT ^^.
With some time, ar10 starts to be slower and more visible to eyes but this doesn't mean, i am actualy able to read more complicated patterns. Not mention triples / streams are still like black magic and it's more like - luck to actualy not get miss/100's on them.
But that's just my personal small experience. To be quite clear, my ar10 reading is shit as ekhm..... gotta work in fun time on it tho.
@Edit - normal keyboard + 60hz + ~2k fps here, 1920x1080 BFS. So OP - get your 3 letters into - play more ar10.