SaltedSlug

I've fixed it on my end now. Now both drives are getting the full write speed instead of just the one that was on the Chipset. I can't tell you exactly what fixed it but here is what I did. I've been having audio popping issues on all sound devices. Realtek onboard, and two external dacs. In the process of trying to fix that issue. I formatted and when I installed windows I made sure the bios was set to UEFI only. Not UEFI + CSM. I'm on the latest chipset drivers for the x570 (1.09.27.1033). I'm switched off the ABBA bios to go back to what I knew worked (AB). I was getting random crashes with ABBA on the MSI board. Here may be the most important part, not sure. I noticed huge DPC latency spikes. Switching off the Ryzen Balanced Power Plan to windows balanced got rid of most of the DPC latency spikes and crazy popping in audio. (I feel like it is still there but much more rare now) I then read about turning off AMD Cool N Quiet. I did that to help with DPC latency. I then switched to the AMD Ryzen High Performance power plan. That happens to be when I tested the SSD's again. With most of the audio popping gone and the SSDs at full speed now. I really don't want to touch anything else. I may be able to turn AMD Cool N Quiet back on but i'm not sure I want to. Maybe the Link state power management has something to do with it? In power settings? Not sure. TLDR: UEFI only when installing windows. Windows Balanced Power Plan, or Ryzen High Performance power plan. Newest x570 chipset drivers.

I just came across this post when I finally decided to check how my drives are doing. I am experiencing these drastically reduced write speeds on my OS drive that is only 27% filled. I have two of these 1tb MP600's and the one with my games on it that is 67% filled does not have the write problems. Now I just can't remember which drive is on what M.2 Slot. Is there a way to find out without removing one drive? I have an MSI MPG X570 Gaming Pro Carbon Wifi. I have one of the MP600's in the top slot and one in the bottom. I also don't remember which slot has direct access to the cpu instead of the controller. So i'm guessing this might be the issue. The question is which one is slow. I'll have to find out which slot is which to figure that out. Edit: m2_1 is the top slot and has access to the cpu. m2_2 is the bottom slot and goes to the chipset. I intended to install the OS on the m2_1 to the cpu. I was lazy though and had both drives installed and just installed the OS on one of the drives. Anyone know a way to check? Edit2: I'm on the latest chipset drivers for the x570: amd_chipset_drivers_v1.8.19.0915 I'm on the 7B93v11 Bios from 7/02/19. I've been holding off on the ABBA bios update since things have been running fine. (Except this Corsair MP600) I have been reading around with others with this same issue and different PCIE4 NVME drives. One claiming those chipset drivers fixed it. Some saying it doesn't.