MAGETWO-64669: Performance degradation for bundle product if price view set as from..to

Author: AVoskoboinikov

app/code/Magento/Bundle/Pricing/Price/BundleOptionPrice.php

@@ -109,7 +109,13 @@ public function getOptions()
      */
     public function getOptionSelectionAmount($selection)
     {
-        $cacheKey = implode('_', [$this->product->getId(), $selection->getOptionId()]);
+        $cacheKey = implode('_',
+            [
+                $this->product->getId(),
+                $selection->getOptionId(),
+                $selection->getSelectionId()
+            ]
+        );
         if (!isset($this->optionSelecionAmountCache[$cacheKey])) {
             $selectionPrice = $this->selectionFactory
                 ->create($this->product, $selection, $selection->getSelectionQty());