Long render times

Will do next time. 

So, I played around a bit and found that when I removed some .jpg slides from the process, the video rendered very quickly.  The slides were created from a .pdf document.  One slide in particular seemed to be causing the problem since when I took it out the render time went to about 4 minutes.  I rendered that slide by itself into an .mp4 file and added it back into the project and that seemed to work.

Today I was doing a similar project with similar items, video from a digital camera and slides from a .pdf document.  For some reason, Premier Pro would not show the preview until I moved the timeline slider. When I stopped the playback, the panel went black.  When I tried to render the project it said it would take 12 hours.  I removed the slides and the video rendered in about 10 minutes.  I then went back to try and render the slides and it failed.  I changed the renderer from GPU acceleration (CUDA) to software only and the slides rendered in about 5 minutes.  I will now put the teo videos together and see how long they take to render together.

Any thoughts on the issues I seem to be encountering; not being able to render the .jpg slides with the video and the black playback panel when paused?

Specs:

Microsoft Surfacebook 2 i7-8650U CPU@1.9Ghz 2.11 Ghz

16GB Ram (13 Gb allocated to Premiere pro when running)

64 bit operating system

Graphics card NvidiaGeForceGTX 1050

Thanks!