but the driver is slower than blockchain driver?

because i put in on a computer 1x rx570 when blockchain driver won't run, no idea why, driver install correctly but miner close at start, looks like something is missing
i tried manually install driver, and a cleanup driver but something wrong
i have the same problem on my computer with an r9390 blockchain driver won't work


i put 17.10.2 but it s very slow 22.8mh only dual mining, lost 1mh compared to previous driver i had