So here is the problem
I can't run some of the modpacks (seem to be all of the big modpacks that have that problem) more than 10 seconds at 50+ fps before it drops down to 0 fps.
I looked around and tryed some things like giving more RAM from 3G to 12G (i have 24G of RAM), i tryed to delete(all version of java on my computer)/reinstal Java 64bit and update it and I also tryed to delete/reinstal technic luncher and the modpacks.
I can run vanila minecraft fine and some modpacks
I have an I7 4770, 24Go of ram and a gtx 1070 graph card
Hope any of you can help me with this (and sorry if i did not post this at the right place...)