If you are looking at a "portable" release, these are the specific features that distinguish it from the standard installer:
1. Zero Installation / No Registry Footprint
2. Run from USB (True Portability)
3. Self-Contained VST Support
4. Persistent Settings (DAT files)
Regardless of whether it is portable or installed, FL Studio 21 introduced several groundbreaking features that you will have access to:
1. Stem Separation
2. Multi-Instance Support
3. Luke FX Plugins
4. Keystroke Detection
This is a common misconception. FL Studio 21 Portable runs exactly the same as an installed version. Once the program is loaded into RAM, the fact that it came from a USB drive vs. an internal SSD is irrelevant to audio processing.
However, the speed of the drive affects:
Latency (ASIO): FL Studio Portable still uses ASIO drivers. If you plug your USB drive into a computer with an audio interface, you can install the interface's ASIO driver (temporarily) and achieve sub-10ms latency. The portable nature does not hinder this. fl studio 21 portable