I looked at your logs.
I compared my dvdfab_internal.log from a .mp4 conversion with yours.
These are some differences I saw .
Yours info: recommand= 8248, Shrink support= 1, enable= 1, cuda_cap= 1 , cpu_count= 8
GPU check: GPUAccelerate-0X203F
GPU check: GPUAccelerate setting-0X2038, 0X2038
GPU check: CUDA cap-0X1
GPU check: Lighting shrink status-1, 1
Burn engine: config engine type-0 begin. ( This shouldn't make a difference except when writing to a disc.)
Burn engine: config engine type-0 end. ( This shouldn't make a difference except when writing to a disc.)
Mine info: recommand= 0, Shrink support= 0, enable= 0, cuda_cap= 0 , cpu_count= 2
GPU check: GPUAccelerate-0X0
GPU check: GPUAccelerate setting-0X0, 0X0
GPU check: CUDA cap-0X0
GPU check: Lighting shrink status-0, 0
Burn engine: config engine type-2 begin. ( This shouldn't make a difference except when writing to a disc.)
Burn engine: config engine type-2 end. ( This shouldn't make a difference except when writing to a disc.)
The fabcheck_internal.log is mostly a hardware report.
Of course there are differences . Someone that knows a specific piece of hardware has caused problems would need to check that.
I'm posting my dvdfab_internal.log so you can look for the other differences but I don't believe any of those would make a difference.