Don't worry just yet. You had other issues interfering with a smooth burning process. You truly may have no need for a different firmware. The streaming and Alcohol issues would be no different if your drive was a Lite-on.
There has been a slight change in the Lite-on 112 model and as a result the rebadged ASUS and Sony models since the last release of the Flash Utility and EEprom utility that simply makes them unable to crossflash the rebadges to Lite-on. They are very well-designed tools, I believe they will simply refuse to try in this case, not brick your drive. Keep an eye on the FU and EEprom threads in the Lite-on forum for future updates that may make it possible for you to test the Lite-on firmwares if you like.
Please let me know what burn speeds are listed as possible with the disc info functions?
Unfortunately I have not seen a media burn speed table for the ASUS version firmware for this Lite-on drive. I can tell you that the best 10x overspeed burning BD-R's with the Lite-on firmware for me have been these 4x 25GB Smartblu. To get to 12x, you will likely need to invest in 6x Sony or 6x Panasonic media. And you will sacrifice some burn quality by pushing them to that speed.
I look forward to seeing your ImgBurn graph.