getting more HW errors than accepted shares now this coin seem's broke

coin is fine, ASIC resistance doesn't come for free, it adds some complications. We need different miner settings on some cards. I believe lowering the intensity will help, testing now.
yep: intensity helps! gone from I 13 to I 12 : No hardware errors so far. Running 1100, 1500 with that and am getting 300k on R9 280X