The worksize was unintentionally changed back to 4k by mistake, this caused a slowdown.
diff --git a/findnonce.h b/findnonce.h
index 94f7a92..5b93c15 100644
--- a/findnonce.h
+++ b/findnonce.h
@@ -4,8 +4,7 @@
#include "config.h"
#define MAXTHREADS (0xFFFFFFFEULL)
-/* Maximum worksize 4k to match page size */
-#define MAXBUFFERS (0xFFFF)
+#define MAXBUFFERS (0xFF)
#define BUFFERSIZE (sizeof(uint32_t) * MAXBUFFERS)
#define FOUND (0x80)
/* #define NFLAG (0x7F) Just for reference */