Yes, it is worth using Unlocker as you are going to get tons of features. Top of the list, you are getting a better refresh rate along with smooth gameplay. It gives you access to a high frame and better performance.
Last but not least, you won’t be swamped in lagging issues as Roblox Unlocker disable V-sync, the main reason behind input lag. It increases the default limit of V-sync which is 60 fps so that everything looks smooth.