Live performing soft synth latency

Hi. I've been with FL since the start and I own basically all synths. Same with other software. I am an old school live keyboard player and I want to have my 88 key MIDI controller play the sounds from Harmor, Sytrus etc. with hopefully less than 5 millisecond lag time and perfect clarity with real time hardware adjustments of all parameters. Please think this through for me. Dedicated computer perhaps? I really want to just play with the stuff now. I've spent countless hours over these decades "programming" and enjoying the funny results. Whoopee. I want to BLAZE and ROCK with these cool sounding synths!! On stage. Live. It cannot be impossible. Please and thank you.