By now people should realized that even a smart contract based Ponzi scheme cannot keep up paying for a long time even if it is 10% or 600% only developers can make out of this kind of Ponzi scheme, the developer can shutdown or steal your money through back door that is written hidden in the contract so do not think of investing.
Whatever is made for the Ponzi scheme is not good, even it will not last long, even with small or large returns, it is the same when the money is collected, it will be taken away and the site is shut down.
Although it is contract based there is no good loophole they just want to rob you of your money with this ponzi tron scheme.
Ponzi scheme will shut down their website today or tomorrow, whatever the type of return. Because the ponzi scheme is designed in such a way that the money of the new members is given to the old members, this circulation of money continues and at some point the owner of the site escapes by scamming the money of the users.
And this website was created with the promise of huge returns only for the purpose of trapping new investors.