Transferring a lot of files to a slow device (e.g. a phone, via mtp) shows the animation for a long time in the notification area - and that takes up considerable cpu resources.  This also makes my laptop heat up a lot.

In general, a separate icon for ongoing activity is preferable to an animation to conserve resources.

I'm using:
kde-workspace-4.11.14-3.fc21.x86_64

'top' output for a long-running copy:
                             
 1296 root      20   0  489448 139876 109076 S  22.2  1.7  40:11.68 Xorg.bin                                        
 1943 amit      20   0 3566032 227152  72792 S  22.2  2.8  49:02.05 plasma-desktop          

Reproducible: Always

Steps to Reproduce:
1. Copy a file
2. 
3.

Actual Results:  
See animation in notification area

Expected Results:  
No animations while file transfer in progress