I love psi , so I rly try to find highest dmg, in both pve and pvp, but also tries diff stats, also waht stats makes me the tankiest for pvp, in pve aoe psi is one of the best still as support, but single target psi is half of a decent dpser, engi can be even more than double my dps ofc.
Rubeck , yes exploading the phantoms right away is a strat called perma weakness, it also makes sure u get 10/10 stacks on most targets so it makes u tankier faster at starts in pvp, but if ur going for Burst psi and overall dmg, getting 6 phantoms out and vertex decomp with assasin right before for Vuln into choke or psychosis is the better choice. But the best choice is to expload very frequently, then when u get concentration/meditation up u get 6 phantoms, and vertex decomp with burst then back to spam expload phantoms for perma weakness, trinket proc = 6 phantoms vertex decomp, or meditation/concetration = 6 phantoms vertex decomp, ofc with superiority if u have it, also remember that u can loop ur superiority now, which helps in both pvp and pve ;D
but yeah Supremacy atm is shit for psi, they need to rework it to be benefitial for the class