This is not a bug report, neither a feature request, but I just want to announce that I have found a solution for rendering issues when using OptiFine/shaders.

To fix the general entity-not-rendering-when-looking-away you need Rubidium (Sodium for Forge) instead of OptiFine, it also tries to optimize the game while not actually changing entity rendering stuff (might need to disable entity culling in video settings > performance to always make the WS show up, not sure though)
For shaders you need Oculus which is a Forge ver. of Iris. It only works if you use Rubidium and the tractor beams are completely visible when using shaders this way!

BLOCK CLUSTER COLORING DOES NOT NEED TO BE TURNED OFF!

(screenshot from far away)

(a close-up screenshot)

I don't know if many people already know this solution, but I think the majority of CWSM-fans doesn't know this, so you're welcome.

As a side note, this way of using shaders somehow also fixes issue #795

The block cluster coloring needing to be turned off depends on the shader.

i dont think so because with optifine + complementary sh. it crashed when block cluster coloring was on but with rubidium x oculus and complementary sh. + block cluster coloring on doesnt crash the game

however you may be right with your statement

Closing since this isn’t a suggestion or bug report.