Before the premierepro ver 14.5, the hardware encoding and decoding option of the media tap is just one.
At that time, there is no problem with exporting media. the GPU usage was over 90%.
From the ver 14.5, the hardware encoding and decoding option are splitted.
If I use the two options are on, premierepro expoting engine couldn't use GPU anymore while the GPU usage is over 90% when the encoding option is on and decoding option is off.

The same problem goes on at the ver 15.0.
Anyone experienced same problem?
I think it is a bug.