If you genuinely think an indicator that draws support and resistance in real time without any repainting exists, then you need to rethink your logic. If they didnt repaint there'd be lines all over the chart which don't have any meaning to be there. Sure, they can create lines which may hold for future points of S/R, but it'll never be fully non-repainting.
On a side note, the only good way to use S/R is to not use it, or at least use it to do the opposite of what most will do. Inter banks know exactly what people are taught and exactly what the general layman will see in the market (in this case, s/r) and will generally seduce people into thinking some points are "respected" or "strong" to get you into a trade and then smoke you. That's how liquidity is created before a big move, or a fake out prior to a big move - cause they know what you're looking at, they know what you're planning, and they're gonna lead you in to it until you take the bait and place your money on the line like the other idiots who fell for the same trap and then smoke all of you.
Of course, sometimes it has to work, otherwise noobs won't refill their accounts after they got smoked. People will tell you it was your fault, facebook group gurus will say that the RSI divergence was 1 degree off-point so you didn't analyse it right lol.