Originally Posted by LicSqualo
Have you updated your windows? Which release you have? Mine, as example, is 1809 (RS5) build 17763.
I remember months ago something happened about the bios WMI and windows timer so Hwinfo and all the same software (or the same windows) had to update accordingly to read correctly the CPU speed.
DPCLatency is know to have bad reading in windows 10. Best is LatencyMon (here: https://www.resplendence.com/latencymon
Regarding to switch from AHCI to RAID was really a bad idea. Luckily you solved, but there is a correct way to switch, if you need-it, and google-it and/or wiki can help you.
Yes I did use latencymon to narrow down what was causing the latency issue, for me it tunred out to be storport.sys the windows storage manager driver, but it was only a symptom. I then knew it had something to do with storage. Things I tried to narrow it down further was uninstalling the Samsung NVME driver and downloading the latest and re-installing that, which had no effect. What did have an effect is when I completely disabled the sata controllers in the bios. But since I had drives on those ports which I need to use, I had to re-enable them, which then took me down the path of trying various versions of the sata drivers. Both from AMD, StoreMi, and the windows default ones. The AMD and StoreMi drivers turned out to be the worse ones causing audio stutters every 10-15 minutes or so, no matter which version of the driver I used. The default windows sata driver only caused alot less audio stutters, only every hour or so, but were still present, and thats when I thought I trying to different way of accessing the drives on those ports using a completely different kind of driver ie. the RAID driver. This then only caused Audio stutters once or twice per day. And only after I added the AHCI power managment option and configured it via that link
in my previos post did the audio stutters completely go away. I then tried out the AHCI driver again (Not RAID) and the stutters were back. So I just defaulted to using the RAID drivers. And with the current configuration, my system is now very snappy, really good responsiveness on mouse and keyboard, especially in gaming, and no stutters at all. And no high latency reported by latencymon due to storeport.sys.
Windows is the latest version too... Windows 10 Pro 1809, 17763.379
It might also be worth noting that I have 4 drives on my sata ports... 2x 1tb ssds, and 2x 8tb WD Reds, both setup as a Storagespace mirror arrays. I cant say for sure, but this might very well be a contributing factor. There is a reason for going the Storagespace mirror route though. The reason for mirror, is a no brainer, but the reason for using Storeagespaces instead of other mirror raid options are for compatability. If my AMD system dies, I can just pull those drives out, and slap them into my X79 board, and all the data is there. If I had set up an AMD Mirror array, those drives would not have been accesable on my Intel board. I also considered getting a cheap LSI Raid controller off ebay, but I couldnt find a good PCI-e x4 card for that. They all seem to be PCI-e X8 cards, which means having to sacrifce 8 lanes just for that card, leaving only 8 lanes left for the Titan X Pascal.
This has been a 7 month battle with this AMD Ryzen platform for me. Only now, finnaly my system is running smoothly and snappy, leaving me more time to focus on whats truely important... DRAM OVERCLOCKING