LG GGW H20L problem with 2x discs Help please

[jgwatt]

We Have a LG GGW H20L Burner.
We have a 2 hour home movie shot in HD and using Pinnacle 12 ultimate to edit and final Blu Ray master. We ALWAYS when transcoding to Blu Ray, do a test copy on a BD-RE 1-2x and if that is ok we then do, in this case a TDK 1-2x BD-R.
We have done this procedure twice and in both cases the BD- RE 1-2x works perfectly but the TDK 1-2x BD-R fails after transcoding approx 10 minutes of the movie.
Another thing we noticed is that when writing the Lead In, the BD-RE 1-2x took a minute or two but the TDK 1-2x BD-R. took at least 15 minutes or more

We then tried a TDK 1-4x BD-R and that worked perfectly.
The only difference I can see between them is the TDK BD-R 2x is version 1.1 and the TDK BD-R 4x is version 1.2.
I dont know what version the BD-RE 1-2x is except it is Panasonic and it comes with the LG GGW H20.
Can anyone offer why and is there a solution so I can use the TDK BD-R 2x as I have a pack of 20.