[Ja4220]

I have been having a few lock ups since applying the over clocks. I thought it might be temp related (have it in a case) but I just checked after the last lock up and it was 62 so in the same range as Wrxtasy. 
Anyway I have reversed the cpu over clock easy enough but not sure what to change to reverse the GPU overclock?
This was the original code I used, I just can't see what to change

Code:

echo "echo 5 > /sys/class/mpgpu/cur_freq" >> /storage/.config/autostart.sh"
 

Thanks in advance.