I appear to have a severe memory leak in 4.8.1, my memory usage seems to grow by about 1 Gigabyte per hour. Having the editor in the background seems to make this matter worse (Ie: Surfing the web/checking email with the editor running in the background). Running Windows 8.1 with all updates.

I’ve added your info to our ongoing bug investigating these memory leaks (UE-15297). -.