hunks don't load past 128 chunks

So I want to benchmark my computer, but the probelm is nothing loads past 128 chunks! Maybe for idk like 1.2.6 can you please increase how far chunks load cuz I really want to benchmark my pc and 128 chunks is still playable! Please (ik nobody would use 256 chunks but come on like i want to benchmrk how good my new pc is!)