Some images (mostly line drawings) blurry, but ok when printed

hello all,

when viewing indesign file of images hard read or without overprint preview.

these drawings/images fine lines.

when exported pdf looks fine, helpful enable preview while working in indesign.

is there way fix display issue?

 

attached example of indesign view , final exported pdf view

 

additional info:

tried setting document , images set high quality display performance.

links linked.

tried places images pdf or jpeg

using indesigncc

 

what screen mode set to? normal?

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