If your main goal is to increase your credit score, we recommend sticking to the original payment dates instead of paying early.
We’re unable to predict exactly how your score will be affected by using Possible because the credit bureaus do not disclose exactly how credit scores are calculated.
Additionally, each credit bureau may calculate your score a little differently so you may see different scores depending on where you look.
We do know credit bureaus use length of history as a factor for calculating credit scores.
Typically, the longer an account is open (such as a loan with Possible), the better. This is because you're able to demonstrate your ability to be consistent and reliable over time.
In summary: we recommend keeping the loan open and focusing on making payments on time!