Will upgrading to 32GB of RAM help with Starfield's stuttering and 1% lows?

Yes. Starfield is a memory hog, and 16GB is the minimum—not the sweet spot. When the game runs out of RAM, it shoves data onto your SSD, causing stuttery 1% low drops. Going to 32GB gives the game room to breathe, especially in big cities or heavily modded areas, smoothing out frame hitches and micro-stutter.