Limelight is blurry

Our limelight stream (resolution: 640 x 480 at 90fps) was clear yesterday. However, today when we opened it, the stream was very blurry and couldn’t pick up on any apriltags. Any ideas on why this happened is greatly appreciated. Is our limelight’s hardware broken or is it a software issue?

Thank you so much!

@Brandon_Hjelstrom can hopefully help you out.

Fingerprint on the lens?