Can somebody help me with my conf? I am pretty desperate, after N-factor change I am only getting rejects and cant help myself, even after conf tuning

I am using Gigabyte R9 280X (GIGABYTE GV-R928XOC-3GD)

here is my config:

ultracoinminer --scrypt -o stratum+tcp://ultra.leetpools.com:3333 -u XXX -p XXX --lookup-gap 2 --thread-concurrency 16384 -g 1 -I 13 -w 64 --gpu-powertune -20 --auto-fan --temp-target 72 --temp-overheat 85 --temp-cutoff 90 --gpu-memclock 1500 --gpu-engine 1050--scrypt-jane --sj-nfmin 4 --sj-nfmax 30 --sj-time 1388361600 -E 1 -s 1 -Q 0