Which Spanish accents are known for being “harsh” or difficult to understand?

issuer: Reddit
Language: English
Date Accepted: 12/05/19
list of contributors: cogitoergokaboom
Title: Which Spanish accents are known for being “harsh” or difficult to understand?
content: Argentina, Chile, and the south of Spain are the hardest for me. In the Caribbean, some talk very fast and use some non-standard pronunciation, like Puerto Rico switching R -> L
Source: https://www.reddit.com/r/Spanish/comments/75h0lo/which_spanish_accents_are_known_for_being_harsh/