I don't know for sure if this happens too with blender 2.80 (My last experience), but I'm facing bad rendering problems on my laptop with my on-board card, Blender 2.92 - Intel HD Graphics. And that starts when I add hair particles on Suzanne (3D Mesh). It's really impossible to do anything:

[![Bad rendering][1]][1]

As anyone can see, I simply added hair particle to object and didn't change anything. I don't think it's normal to add hair particle and get that in the end. There's probably not much I can do on this conditions.

It was supposed to look like this:

[![Inspiration work][2]][2]

But I get in return this: 
[![Bad Rendering][3]][3]

I know some Integrated cards are slower and offers less shader cores, but it fairs decently on some HD games. I face slower rendering speed with simple objects too. It's not I want to make high poly or very complex objects as game assets, but a remarkable quality is very desirable.

[<img src="https://blend-exchange.com/embedImage.png?bid=DPM6klGY" />](https://blend-exchange.com/b/DPM6klGY/)

  [1]: https://i.sstatic.net/r388t.png
  [2]: https://i.sstatic.net/qW13k.png
  [3]: https://i.sstatic.net/52kwp.png