Energy-saving mode was originally intended (primarily) for laptops. With a recent Windows update, power consumption can now also be permanently reduced on desktop PCs.
Windows Performance Mode is worth using on desktop PCs, but on laptops it can reduce battery life and increase heat with minimal gains.
Smart TVs are basically computers now, with their own hidden hacks, tips, and tricks. Here are a few I frequently rely on.
When balanced mode secretly behaves like performance.