Yes, some laptops can experience input lag depending on the model and usage.
Yes, some laptops can experience input lag depending on the model and usage.
Each gadget experiences delay when receiving signals, similar to a standard computer.
Every device experiences input delay due to physics. The time between pressing a button and seeing the result varies. Running games would be affected by the machine's specifications. You mentioned Melee, likely referring to an emulator. Edited January 17, 2017 by Archeval
I'm taking it seriously now. If you meant Super Smash Bros Melee, then yes—using a laptop to capture input for console play will likely introduce noticeable delays. Running it through an emulator depends on system performance and controller quality, with additional lag introduced by the conversion process.
Laptops perform similarly to regular screens in terms of input lag (minor difference), which is insignificant. It’s a small improvement compared to your typical 230-300ms response time, so you won’t notice it.