Input lag in emulation is usually a chain, not a single setting:
- TV picture mode
- controller connection
- emulator/core
- scaling
- shaders
- device performance
Before buying a new box, it is worth checking Game Mode and testing a wired controller first.
Full beginner-friendly guide:
https://newclassicgaming.com/d/14-how-to-fix-input-lag-on-modern-tvs-2026-update




