SAP replied back with Browser supporting - Web Dynpro ABAP - SCN Wiki
There are 3 notes mentioned.
IE11 has several performance issue, see more in SAP notes 2099080 and 2163772
Additional performance issue after installing KB3038314, see note: 217016
Note 2170160 and 2163772 are not relevant because we are on the latest IE patch.
On Note:2099080 we have set FEATURE_FORCE_NATURAL_TEXT_METRICS registry key as in the note and Very bad performance of NWBC in IE11. It does not work.
In the note also said to add
<meta http-equiv="X-UA-TextLayoutMetrics" content="GDI"/>
How can I add meta tag on web dynpro abap? Is there any setting on the server to add this meta tag? We didn't use portal.
Thanks,
Chaiphon