Takeaway: Some but not many locations will support AR/VR servers in 2020-2022. The good news: It works. 5G + Edge Cloud networks are starting to deploy with 15-25 ms latency. Where fast enough, you will be able to move all your calculations to high-capacity servers which will do all the calculations and just send the picture to a lightweight headset or phone. Major companies including Tencent, Niantic Pokemon, and Verizon are already testing. Experts think quality VR will require 10-20 ms latency, right on the edge of what's coming.
The rest of the story. 1-5 ms is often promised. (URLLC) It works in the lab but is years away from meaningful deployment. Sorry. The best available in the next few years will be Level 2 Edge clouds, relatively close to the user, delivering 15-25 milliseconds. Deutsche Telekom has begun deploying a Level 3 Edge cloud, further back in the network, 20-30 ms. Without an Edge cloud, 5G latency should be 30-45 ms. Today, a decent LTE network is 45-55 ms average.