vim-patch:8.1.1724: too much overhead checking for CTRL-C #10564

Problem:    Too much overhead checking for CTRL-C while processing text.
Solution:   Increase BREAKCHECK_SKIP.  Remove the difference for when built
            with the GUI. (suggested by Andy Massimino, closes vim/vim#4708)
b4fe0eb4b4

src/nvim/misc1.c

@@ -2735,7 +2735,7 @@ void preserve_exit(void)
  */
 
 #ifndef BREAKCHECK_SKIP
-#  define BREAKCHECK_SKIP 32
+#  define BREAKCHECK_SKIP 1000
 #endif
 
 static int breakcheck_count = 0;