Can In Design handle big files from autocad?

I have created some drawings in Autocad 2016. The drawings are not complicated but they have a lot of hatches which is

driving up the number of objects and file sizes.

I wanted to plot them as pdf and insert them into Serif PagePlus and the pdf part did fine. I can open the pdf's and they

are a very good plot. However when I try and insert them into PagePlus the lines get messed up and half the text disappears.

I am using the font Country Blueprint which comes with Autocad. Also, they are very slow to load into PagePlus and the

program becomes very sluggish.

I tried printing as a png files but those didn't come out very well.

If I plot and insert the drawings without the hatches, they come in fine. I would like to use the hatches if I can.

I wanted to attach one of the pdf's but got a message saying it was forbidden.

Could InDesign handle those pdf's ?

Any ideas?

Thanks