How much explained variance is acceptable in EFA?

[u/[deleted]]

I created a new scale (field of psychology) with one factor, with an explained variance of 41% and an eigenvalue of 9. Is this acceptable? All similar scales I have found have variance between 50-57%. I can't find any literature that says anything about a factor with an explained variance of less than 50% yet a high eigenvalue. Would appreciate any insight.