2 issues with Powerpoint to Miro

My first issue is with importing a powerpoint presentation into a Miro board for presentation.  i drag and drop the pptx file, then extract the slides.  The slides come over with words overlapping, in different places than they were on the original, and the pictures sometimes have what look like smears or lines and smudges of colour in them.

The 2nd Issue is that when I attempt to delete the slide in Miro and copy and paste the individual slide from the powerpoint presentation it is blurry once in Miro.