3 ms·The GUI is still essentially single-threaded. Only BeOS with its fully parallel UI had it right.by fmajid 4y agoThe GUI is still essentially single-threaded. Only BeOS with its fully parallel UI had it right.rbanffy 4y agoIRIX remained quite responsive no matter how much I threw at it.fmajid 4y agoIRIX was remarkable for its performance, and not just in graphics.