In windows 7 and windows 10 preview this works fine.
I clean installed win 8.1 PRO for testing on my spare rig.
Used IE11 a small amount and smooth scrolling was working.
I Installed all cricitial and reccomended updates via windows update. Included was also a nvidia driver update. Rebooted of course/
Now in IE11 the smooth scrolling is always off, even with the box ticked.
I tried toggling the tick.
Tried using the reset settings option in IE11.
Still no smooth scrolling.
This is a clean install, no 3rd party software, no imported data.
No customisation of the ISO other than to add a EI.CFG to disable the requirement of a key.
Type DDR3 Size 8192 MBytes DRAM Frequency 532.3 MHz
Graphics Card(s)
ATI AMD Radeon HD 7310 Graphics
Sound Card
AMD High Definition Audio Device Realtek High Definition Audio USB Audio Device
Monitor(s) Displays
Name 1950W on AMD Radeon HD 7310 Graphics Current Resolution 1366x768 pixels Work Resolution 1366x76
Screen Resolution
Current Resolution 1366x768 pixels Work Resolution 1366x768 pixels
Hard Drives
AMD K140
Cores 2
Threads 2
Name AMD K140
Package Socket FT1 BGA
Technology 40nm
Specification AMD E1-1200 APU with Radeon HD Graphics
Family F
Extended Family 14
Model 2
Extended Model 2
Stepping 0
Revision ON-C0
Instruction