Regarding the question of why it is necessary to block the release of all fluids at the same time in GT6 multiblocks, it may be because releasing a large amount of fluids at the same time can overload the system and crash the server. Regarding the question of how to have x64 processing and a slower factory, I would recommend using different kinds of multiblocks that can perform different tasks at different speeds and efficiencies. You can also use automation and control systems to avoid overloads and machine failures.