The Walmart app and the website itself are absolutely horrendous. You'd think I was using a Windows 98 PC and a dialup modem every time I try to use it I swear. No idea how it's so shit and I don't think I've ever used a less optimized website in my life beyond overloaded Lemmy instances.
I use it too, but came here to list it as my stupidly slow app also. You literally own AWS, how can a search for "Black T-shirt" take 40 seconds to load?! If you're going to be an evil corporate monopoly at least be quick about it.