I just got a Lite-On LH-18A1P and I’ve been testing it in an external usb case.
I used the ‘create data disc’ option in CD-DVD Speed 18.104.22.168 and got good results on Memorex 16x DVD+R media (though it only went up to 16x). The burn looked exactly like the attached photo except my Burst Rate showed up as 24 MB/s.
However, I then tried to do a transfer rate read test on that same DVD and the results came out like the 2nd photo (maxed out at 4x for the first 3gigs of the read). Anyone have any ideas why this may be and how to fix it? It’s also occurred while testing video DVDs and a game DVD.