Splendid resolution (8)
I believe the answer is:
cracking
I believe this clue is a double definition.
'splendid' is the first definition.
(I know that splendid can be written as cracking)
'resolution' is the second definition.
(thesaurus)
(Other definitions for cracking that I've seen before include "Excellent; fracturing" , "great!" , "failing" , "Wonderful" , "very fast" .)