I have been trying to find out why IE uses up so much processing power, but unfortunately all I have been able to find is various ways to fix it.
My problem was caused by leaving the IE open on our server, after checking out network speeds (visited speedtest.net), and after a couple of days, it started to severely slow down our entire network. Checking the performance of the server showed that IE was chewing up a huge chunk of CPU. (99% in the processes tab, and the CPU Usage in the performance tab was at 100%).
The only add-ons that IE had installed, and running was
- Java (32-bit and 64-bit)
- Shockwave Flash Object (32-bit)
- XML DOM Document (32-bit and 64-bit)
Using IE 11, and the only tab open was on http://beta.speedtest.net, and was left open for 2 days (48 hours).
As soon as I attempted to close it, it crashed (not responding), and when I force-stopped the program, the CPU dropped back down to a much lower usage (~20%).
Can anyone tell me why this happened? In my mind, it seems like there was a recurring process chewing up resources, but I would like to confirm this.