It's been a while since I've done anything with this thread, but I figured I should post some cool stuff here.
I've been testing different shader packs using vanilla textures with render setting at 12 (Normal+ in Optifine settings.) Each shader pack has different versions found at their respective links. Performance varied greatly depending on different conditions, but each pack was at least decent, and I believe all would be good or better in an underground setting.
Adding a shaderpack is a lot like adding a resource pack. Go to the options menu, click "Shaders", and then open the folder to paste in some shader packs. There are some options on the right you can change to increase FPS. (I strongly suggest you play around with those settings. It could be a 35 FPS difference.)
Chocapic Beta 4.10 - MrMeep EditDepth of Field: No
Motion Blur: No
Versions: Only one version of this edit.
Comments: Instagram Meets Minecraft.
KUDA Shaders v5 Ultra PreviewDepth of Field: No
Motion Blur: Yes
Versions: No others for v5.
Comments: The lens flare is a nice touch. Blocks have a white outline when selected, also nice. Motion blur gets a little weird if you turn too fast.
SEUS v10.1 StandardDepth of Field: No
Motion Blur: No
Versions: Standard, Ultra, Ultra DoF, Ultra Motion Blur
Comments: Kind of vanilla as far as shader packs go.
Sildur's Vibrant Shaders 1.053 Ultra (Beta)Depth of Field: Yes
Motion Blur: No
Versions: Lite, Medium, High, Ultra, Basic, Basic DoF, Basic Motion Blur
Comments: Clouds are meh. Taxing pack to run.
TME Shaders v1.2 UltraDepth of Field: No
Motion Blur: No
Versions: Normal, Ultra, Less Fog, DoF
Comments: THE SUN IS A MASS OF INCANDESCENT GAS
We are each a beautiful and unique snowflake that will melt in hell.
I got the words "jacuzzi" and "yakuza" confused.
Now I'm in hot water with the Japanese mafia.