Sorry, I don't not support very old cards anymore.
How about
very NEW? Still no support for Polaris_12 (RX 550) ?
We need support for RX550. The card is not that old really.
RX550 is not a good card for mining really, I dont think claymore will spend time on that...the hashrate density is just awful
edit: maybe try another xmr software
It's not that bad, it's doing about 400ish with xmr-stak and its rather cheap and easy to find.