On AMD Threadripper systems you can enable Dynamic Local Mode, which acts like something which prioritize the RAM (needs a restart). In the future AMD is going to do this with a software automatically in the background. Dynamic Local Mode (DLM) can be controlled via a Windows Service (on/off) and the needed update in order to get this automatically controlled will be introduced October 29. 2018 with an chipset driver update (and is for now an Windows exclusive function because Linux already handles it better).
- Check your OS Event Reporter tools for signs of hardware failures
- Check the PSU (and the rest of your hardware components)
- Is your Sound card/GPU/SSD/M.2 in the correct slot? 16x and not 1x/4x?
- Have you checked your PSU again?
Assuming that your hardware is 100% perfect and working you can use one of these tools in order to workaround the Windows integrated compression bug, see here.