Apps slow to install on android 5.x.x?

I have noticed ever since I have started using lollipop based roms, the apps seems to install alot slower. For instance I had about 10 apps to install and I went to bed, when I woke up the next day it still wasn't done. They download fast, they just don't install fast like they did with kitkat. Has anyone else noticed this? If so, is there a fix?