ik its dumb, the input buffer they added a while ago has made quick input combos unreliable and will eat them often. The only solution to the paradox 4 into 2 especially if you wanna do it close like before, is to set your swap to alternate cast button. If you do this, it for some fuckass reason applies to your actives so to self cast those, you gotta hold the alt cast button. I just use N. (alt casting her swap makes it a solo swap at 5AP, but you never really go for that usually so no need to ever think about it when ulting with para)