Hi, we are running IE11 and recently ( last 2 -3 weeks) seem to be having severe

This could be due to IE11 update 11.0.9600.18059, released 10/13/2015 via KB3093983. This is caused by a memory leak in the spelling correction add-on. As a workaround, you can disable spelling correction as follows:

- Click the gear icon in the top right of the IE browser
- Click "Manage add-ons"
- Click "Spelling Correction" on the bottom of the left-hand list
- Uncheck the box next to "Enable Spelling Correction"
- Close and re-open IE11

We have a very recent reproduction of something very similar to what you report and there is a Tech Note in the process of being written. Microsoft and/or Appian will be addressing this. In mean time, here is some background and guidance:
Memory leak in Windows 7/Internet Explorer due to IE11 update 11.0.9600.18059, released 10/13/2015 via KB3093983. This is caused by a memory leak in the spelling correction add-on. As a temporary work-around, those experiencing this issue can disable spelling correction as follows:

o Click the gear icon in the top right of the IE browser
o Click "Manage add-ons"
o Click "Spelling Correction" on the bottom of the left-hand list
o Uncheck the box next to "Enable Spelling Correction"
o Close and re-open IE11

Thanks guys. Guess a hotfix will follow?

@Mike - Yes. Btw, the work-around doesn't completely solve it, but it gives you a lot more time (depends on usage).

It looks like Microsoft will be patching this memory leak issue w/ IE11:

IE 11 (Update Version: 11.0.24) Memory Consumption Issue:
connect.microsoft.com/.../1974240

answers.microsoft.com/.../942e8822-5c12-4c8e-b256-9184f1a5ecf6

Appian released a hotfix to address this issue because haven't seen a fix from Microsoft yet.

For Appian 7.11, forum.appian.com/.../Hotfixes.html
Issue: AN-64310
For prior Appian releases, please see the applicable hotfix page.