Heavyarm thanks a lot for your answer.
The problem is That the software crash when i put more than 60 of intensity (on the line above the manual gpu config of the config file).
So i cant do it

Try the below,
{
/* Type can be : normal, normalv7, lite, litev7, heavy, ultraheavy */
"cryptonight_type" : "heavy",
/* Intensity 0-> auto intensity, or value from 1-300 */
"intensity" : 112,
/* To use 2 threads per card set double_threads to true */
"double_threads" : true,
/* Gpu target temperature, leave it on 0 if you don't want to use this option */
"target_temperature" : 0,
/* If you use a SSL/TLS encrypted pool set this to true*/
"pool_use_tls" : false,
/* Mining pool address WITHOUT the stratum+tcp:// or stratum+tls:// part */
"pool" : "POOL_ADDRESS:PORT",
/* Address of you wallet */
"wallet" : "WALLET_ADDR",
/* Password for your wallet, probably just x */
"password" : "x",
/* Location for devfee servers, to get better latency */
"location" : "europe",
/* Advanced settings for each GPU manually */
/* Put in devices that you want to use, if you for ex. don't want to use gpu 2, just don't insert it,like in this example */
/* Id starts from 0 , not from 1 !! */
/* To get a list of available devices with their id's, use --listdevices parameter */
/* This is just an example, edit it and remove comment lines !! */
/*"gpu_conf" :
[
{ "id" : 0, "intensity" : 0, "worksize" : 8, "threads" : 1},
{ "id" : 1, "intensity" : 20, "worksize" : 16, "threads" : 2},
{ "id" : 3, "intensity" : 30, "worksize" : 16, "threads" : 2},
{ "id" : 4, "intensity" : 0, "worksize" : 8, "threads" : 1},
]*/
}