Welcome to the forum
You have a LiteOn, so with DVDs you could try a Disc Quality Scan using Opti Drive Control (trial version available here) - I believe the forum standard scanning speed is 8x, for that drive.
Opti Drive Control also offers a Transfer Rate Test option, with which you can check if that drive has a problem reading the disc at its full speed. LiteOns usually aren't the best drives for this test though, as often they can overlook or handle disc read errors better.
Before you give that a go, though, there may be a simpler answer: what brand of disc did you use, and at what speed did you burn?