I’ve took v2.2 for a spin with my new RTX 2080 and the overall speed is amazing. Render times are around 13-23 seconds with defaults from a file - 2.8 current build.
I’ve also tried materials in EEVEE and guess what. They are working just fine. Of course not glass ones, some of them. Some of them are crashing Blender. Here are some simple tests - Cycles top ones:
There are some differences with reflections and no mesh lights in EEVEE but overall it looks amazing and works fast as hell.