I'm not sure whats going, but I have no fuel in some tanks. Sometimes its the second stage, and oddly a few times the first stage. Also, decoupling issues where the rockets remain intact. Manual decoupling works, but stage decoupling does not.
The decoupling you can manually decouple to avoid the issue. Works fine that way. The fuel issue, I have no clue how to fix. Or I would be on Mun already.
Windows 11
NVIDIA GeForce RTX 4070 Ti
13th Gen Intel Core i9-13900K