Materials for good viz

Hi! I am new to archwiz for UE4, has experience with Vray etc and tired of the long loading time, especially the light etc.

Anyways, I was wondering on how to get high quality materials without buying them? I see 4k resolution textures etc but was wondering if I can make my own? Or if there is a free download page? I have found several texture-sites but they are usually older, low quality, 4k, forget about it!

Look into Substance Designer or Quixel Megascans.

https://www.textures.com/ is another one which more caters the games industry but there are still some good tiling textures on it.

https://www.crazybump.com/ for making normal maps and or roughness and ao maps

Been looking aroung myself. Like ready to go ug4 material so i can study them too. Not too much honestly.