vertcoin mining issues

[ayayay]

I've got  litecoin mining rig hashing at  800 khs per card( r9 290x) and trying to convert to vertcoin but will only has at 150 khs per card what is the most important setting to adjust to increase the hash rate.


setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
./vertminer --nscrypt -o stratum+tcp://pool.verters.com:3333 -u xxxxxxx -p xxxxx -I 13 -v 1 -w 256 -g 1 --thread-concurrency 21756 --gpu-engine 1025 --gpu-memclock 1500 --temp-target 75 --temp-overheat 87 --temp-cutoff 90 --lookup-gap 2 --queue 0 --scan-time 1 --expiry 30

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[Amph]

you need -I 20 with 290-290x, i found that 25601 is good enough