Fuse has a series on video filters available - scaling/simulating the video output on a TV, etc. Try one of those filters (TV x2 seem to simulate a CRT scanline display).
Not sure of Zesarux has more advanced options, you could give it a try.
Please do not post a support request without first reading and following the advice in https://retropie.org.uk/forum/topic/3/read-this-first