By the way this is the bar file Im using.

cpuminer-aes-sse42 -t 10 -a yescryptr16 -o stratum+tcp:/mine.nlpool.nl:6333 -u YaQWNazgdxoC9vtgJt7Dmmp1i8mvcf5Ae7 -p c=YTN --cpu-priority 1

This one is an i7
The rigs are Pentiums