--scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388361600 -w 256 -g 2 -I 12 --thread-concurrency 36864 --no-submit-stale --lookup-gap 4 --expiry 10 --scan-time 1 --queue 0

For my xfx 280x , spd 45khs, 0 hw

  Pls help me . My xfx 280x mining speed 340khs , it ok ?

my r9 280x is mining at 136khash/s, my worker is 1k khs but only 11utc every hour  ? Also so many reject , about 10% and stratum from pool 0 detected new block  .
what do i do fix it ? Help me . Thks