What is the yield of STX stacking?

Could you please elaborate on the yield of STX stacking? I'm curious to understand how the process works and what kind of returns investors can expect. Is it a fixed rate or does it vary based on certain factors? Additionally, how often are the yields distributed, and is there a minimum amount of STX required to start stacking? Also, could you explain any potential risks involved in STX stacking? I'm interested in the overall profitability and sustainability of this investment strategy. Thank you for your time and assistance.