Curve on horizon and also device lag when using Polarpro filter

Hi there. Thank you for reaching out and we do apologize for the trouble. Just to clarify, does the horizon issue still occur when you remove the said filters? If yes, please upload a sample footage or image showing the issue so we can check. If the issue is not present when the filters is not installed, we recommend using a different set of filters to avoid this issue. Thank you for your understanding and support.