set chain debounce timeout to 120ms

lib/node.js

@@ -711,7 +711,7 @@ Node.prototype.setWatches = function()
 	this._debouncedChain = debounce(function(hash) {
 		console.info('>>>', 'Debounced');
 		self._latestQueue.push(hash);
-	}, self._chan_min_time);
+	}, 120);
 
 	this._debouncedPending = debounce(function() {
 		self.getPending();