Hi guys. Use srb 1_6_9 on my 7970 and have a less hashrate compared to 1_6_8. The problem is that the value of "fragments"  does not change, it is always 4. Heres my config.txt:
{
"cryptonight_type" : "normalv8",
"intensity" : 57,
"worksize" : 16,
"double_threads" : false,
"fragments" : 8
}


Where is my mistake? Thank you.