This is my experience to the apparent update for users with AMD based computers on July 9, 2018.
https://android-developers.googleblog.com/2018/07/android-emulator-amd-processor-hyper-v.html
To start, I'm using a Ryzen 1700x and Windows 10 Pro that just finished it's round of windows updates yesterday.
I think I followed everything to the letter but it continues to display that error.
10:40 PM Emulator: emulator: ERROR: x86 emulation currently requires hardware acceleration!
https://i.stack.imgur.com/V0USC.png
I'm currently using Android Studio 3.2.1 and Android Emulator 27.3.10 https://i.stack.imgur.com/ZpG3I.png
I made sure AMD's virtualization option "SVM Mode" was enabled in BIOS.
https://i.stack.imgur.com/943S7.jpg
I have tried enabling BOTH Hyper-V and Windows Hypervisor Platform. I have since disabled Hyper-V since it isn't a requirement, but kept Windows Hypervisor Platform enabled as listed. Either way, it still doesn't work.
https://i.stack.imgur.com/fHkL9.png
https://i.stack.imgur.com/PMUMp.png
I have also tried downloading the Canary build 3.3. Still nothing.
I have also tried completely uninstalling my Android Studio, re-downloading and re-installing it. Still nothing.
Any ideas??