Frame-time budget calculator
Convert a target frame rate into the maximum time available for an entire frame. Reserve headroom because the theoretical maximum is not a safe production target.
How to use the result
Split the working budget across game thread, rendering, GPU, presentation, and unavoidable overhead only after measuring representative scenes. A 60 FPS target allows 16.67 ms in theory; budgeting to about 13.33 ms leaves room for spikes. Engine scheduling and hardware vary, so profile on actual target devices.
