GPU not being utilized in Premiere (Nvidia GTX 1050 Ti)

Hi I am constantly experiancing a lagging and freezing premiere. Most often the playback will freeze but I'll be able to save the project and adjust settings, eventually when I try to close premiere is wont shut down with out opening task manager.

I am almost certain it is an issue related to the GPU. I did a big upgrade from a nvidia gtx 750 to nvidia gtx 1050 Ti. but there seems to be absolutely no difference. when I open task manager and can see that premiere is running on my intergrated graphics card and not my 1050. and yes Cuda is my playback renderer.

Thanks in advance

Processor: Intel(R) Core(TM) i7-47700HQ CPU @ 2.80 GHz

Installed RAM: 16.0 GB

System: 64-bit

Graphics Card: Geforce GTX 1050 Ti

Windows 10

Sequence Settings

Mode: AVCHD 1080p Square Pixel

Timebase: 23.976fps

Project Settings

Renderer : Mercury Playback Engine GPU Acceleration (CUDA)

Preview Cache: None

Source footage Audio is in 5.1

sample rate: 48000Hz

Display Format: Audio Samples

Preferences

Audio Hardware: MME

Latency 150

Media Cache Emptied

No proxies

I'm working on a External hardrive USB 3.0

Premiere is updated.

Geforce drivers all updated.