FFMPEG command line not using GPU when compressing MP4 file

Hey all I have been working on a good command line string to use for my movies that I would like to trim the size down to at least half the current size.

My handbrake information regaurding my GPU and computer system is this:

HandBrake 1.5.1 (2022011000)
OS: Microsoft Windows NT 10.0.19043.0
CPU: Intel(R) Xeon(R) CPU           X5650  @ 2.67GHz (12 Cores, 24 Threads)
Ram: 40940 MB, 
GPU Information:
  Microsoft Remote Display Adapter - 10.0.19041.662
  NVIDIA Tesla K10 - 30.0.14.7141
  NVIDIA Tesla K10 - 30.0.14.7141
  Microsoft Basic Display Adapter - 10.0.19041.868

When I originally made a command line, I was just using it to copy the file over to where it needed to go with the following:

ffmpeg -y -hide_banner -threads 8 -hwaccel cuda -hwaccel_device 1
-hwaccel_output_format cuda -v verbose -i “c:testingvidsAEON FLUX 2005.mp4” -c:v h264_cuvid -gpu:v 1 -preset slow -c copy “c:testingvidsAEON FLUX 2005 nvidia.mp4”

This produced a 828x processing speed:

But for taking that same file and compressing it I seem to only get a ~8x speed?

So that is quite a difference there. Am I using the correct syntax for it to only use my GPU to convert/compress the mp4 with the h264 nvenc?