Plotting AutoCAD plans

Hi, I was wondering if anyone can maybe help me out.
I’m plotting some plans to pdf, but when its done, I’m noticing that all the blocks look off, they are very broken up, circles and arches are very jagged… any ideas to solve this problem?

Make sure on the top right of your screen the view cube is set to the top view.
You can also try typing in re to regenerate and see if that helps.

I tried both,
on the AutoCAD screen , it looks perfectly fine, my issue is once it’s in pdf format, ,
Like for example the sink is not smoothly rounded any more,
see the attached img.