I just got this card (doing a low-profile card round up thing): https://www.newegg.com/Product/Prod...14137148&cm_re=amd_550-_-14-137-148-_-Product The first round of benchmarking looked really good for the setup that I'm running. I came back today and all of my scores were about half of what they were yesterday. After watching GPUz, I noticed that after the computer wakes from sleep that the RAM does not clock up to its proper speed during 3D; it stays at the idle speed. The GPU clocks properly. After rebooting, everything works properly. I've tried 3 other AMD cards and one nVidia in this computer and have not seen anything like this previously. Has anyone else seen similar behavior with AMD RX 550 cards?