Hello, I was pretty desperate when fglrx was removed from 16.04+ support. However, AMDGPU-PRO came out for my graphics card. I did everything as stated in the installation tutorial, but the results are horrible I cant even play a simple HTML5 browser game (only for example, gaming isn't the purpose of this machine, android virtual devices are but they are unusable as well).
GPU: R7-250 2GB
CPU: X4 750K
Screenshot of the problem and the details about system