Originally Posted by Count_Duckula
I noticed this a lot when I first switched to Nova, try Settings | app management | app list | nova launcher | power saver | run in background
That seems to have stopped it, for the most part at least.
I think I may have figured it out!
I made another thread earlier about adding apps to the "locked" list in multitasking by going Settings > Additional Settings > Recent Tasks Manager.
This stops apps from reloading/restarting often, hadn't tried it with Nova before as I worked this out after deleting it, but re-installed it and tried now and it seems to be going strong