0036786: Web POS performance issue after upgrade to 3.0PR17Q1.3

Description

After the upgrade to PR17Q1.3, we are experiencing some performance issue, slow loading appearing in the POS UI.
While adding random products to tickets, could find that the line item amount value is loading slow, this happens when I operated with large no of products.
Also, after adding good number of products(around 10 or more), then on deleting a line item from the ticket operation is slower around few seconds.

Steps To Reproduce

1.Go to https://livebuilds.openbravo.com/retail_mp_3.0RR17Q1.3/web/org.openbravo.retail.posterminal/?terminal=VBS-1#login [^]

2.Create a receipt,add more then 10 products,while adding its taking time.
3.Delete one by one products,deletion also taking time.

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Notes
(0099675) marvintm (manager) 2017-09-29 11:23	We have been doing some performance testing between 16Q3, 16Q4 and 17Q1 releases when calculating the receipt, and we have not noticed any significant difference. We would need more specific information on how to reproduce this issue to do any proper fix.

Issue History
Date Modified	Username	Field	Change
2017-09-05 08:51	nitasujena	New Issue
2017-09-05 08:51	nitasujena	Assigned To	=> Retail
2017-09-05 08:51	nitasujena	Resolution time	=> 1506376800
2017-09-05 08:51	nitasujena	Triggers an Emergency Pack	=> No
2017-09-25 16:16	ranjith_qualiantech_com	Assigned To	Retail => ranjith_qualiantech_com
2017-09-25 16:17	ranjith_qualiantech_com	Status	new => scheduled
2017-09-29 11:23	marvintm	Review Assigned To	=> marvintm
2017-09-29 11:23	marvintm	Note Added: 0099675
2017-09-29 11:23	marvintm	Status	scheduled => closed
2017-09-29 11:23	marvintm	Resolution	open => unable to reproduce