Horribly uncomfortable - Lowa Zephyr GTX Lo TF Hiking Shoes - Men's

I bought these Lowas because my friends have pairs of the Mid boots, and they say they hold up well and are comfortable. I will say that these shoes/boots are built extremely well, and are heavy/sturdy. I have worn them for 10 days now to try and break them in, and 1.5 hours in to wearing them each day the sides of my feet are incredibly sore. I have tried having them tight, I have tried having them loose, and what I have found is that my feet seem to have an issue with the pressure that the rubber decorations create on the sides of the shoe. My heels also ache, as the heel cups do not grab on to my heel well and so the shoe slips up and down frequently as I walk. I keep trying to figure out ways to make them work, but it’s not looking good.