I've been running shaders for a little bit over the past few weeks and I've noticed its extremely difficult to have even a lite shaderpack to run at 60FPS. Now, let me get out of the way my specs. I have a GTX 970, i5-3570, and 16GB of RAM with Minecraft running on a SSD. I am running about 140 or so mods, however my CPU usage hardly ever goes beyond 60% and my GPU usage is around 25-30%. My question is, what is causing the shaders to not utilize my GPU and CPU to full capacity? I have a very similar issues with vanilla Minecraft as well, I rarely see above 45 FPS in both instances. Is anyone else having issues like this or am I missing something that I need to do so maybe Java or Optifine can use all of my graphics card?