Roblox FPS Unlocker (RFU) is a utility that removes the frame rate limitation in Roblox. To use it, download the current version and unzip the rboxfpsunlock.rar and run the executable file. This can be done both before and after the game starts.
Important: Antivirus programs may mistakenly classify the utility as a threat. This is because RFU is making changes to Roblox processes for its work. Builds for 32-bit systems cause significantly more false positives, so their support has been discontinued. You can independently check the source code and build the project in Visual Studio 2019 or add a file. rboxfpsunlock.msi to the exclusion of your antivirus.