docssy

I think I have a similar bug on v4.2.2 that just burned at least 2 hours. Call it a panel override. 1) Create your shader uniform with the shader panel...

Exactly like this. I didn't set those with the panel 

 1 second-ish calls

 Finally, the stack

 And inside [NoStorageBlocksIn]. Note the 2-3ish ms for everything in here, compared to the 1500ms spikes. Something is not being very productive