Code to test exact cause of the 'up only' diff bug

src/pow.cpp

@@ -526,7 +526,11 @@ unsigned int CalculateNextWorkRequired(arith_uint256 bnAvg,
     // Limit adjustment step and use medians to prevent time-warp attacks
     int64_t nActualTimespan = nLastBlockTime - nFirstBlockTime;
     LogPrint("pow", "  nActualTimespan = %d  before dampening\n", nActualTimespan);
-    int64_t AWT = AveragingWindowTimespan(height) ;
+
+    //NOTE: this will break HUSH+DRAGONX mainnet! For testing only.
+    int64_t AWT = params.AveragingWindowTimespan();
+    //int64_t AWT = AveragingWindowTimespan(height) ;
+
     nActualTimespan = AWT + (nActualTimespan - AWT)/4;
     LogPrint("pow", "  nActualTimespan = %d  before bounds\n", nActualTimespan);