Hello. I recently built new system on 5900x and while playing cs noticed that there are microstutters (screen freezes for about 0.1 sec), mostly when flashbang "flashes" somewhere on map. I've tried many things, and two of them helped:
1. Disabling both SMT (multithreading) and SVM (virtualization) in bios
2. r_dynamic 0 command in console.
Problem is, i don't want to disable SMT (it boosts perfomance in other software) nor SVM (need it for hyper-v), and r_dynamic 0 gives you disadvantage on some maps.
All drivers are latest, BIOS is latest, no OC, happens on clean windows installation. Tried different SSDs and videocards. Motherboard is Asus ROG Strix B550-F gaming. RAM - HyperX Fury HX432C16FB3K2/32. Don't have another RAM to replace, but tested it in memtest86 and several stress tests, it is stable, with XMP and without.
So, is it CPU or game issue? If CPU, do i have defective model or it's Ryzen architectural flaw? Cause i've found on the internet my exact problem appeared on older ryzen CPU's.
Does the issue occur in offline gameplay as well?
Also are you just noticing the microstutters during your own gameplay time or do you have something else logging it as well (screencapture, etc.)
Been a while since I have played CS:GO but I had a similar issue with it before that only got resolved when I changed ISP's. Could possibly test that using your phone as a tether or something similar.
So I don't have a solution, but wanted to chime in. I have the same motherboard with a 5800x and I'm seeing microstutters in warzone. I have tried an exhausting list of things to no avail. Have not tried your solutions above as I have been focused on everything else besides the CPU/motherboard combo. Since most of these things didn't work I'm starting to heavily lean towards these as the culprit.
Good News! I Found a solution to my issue!
After 3 weeks of exhaustive troubleshooting, I did a couple of things yesterday evening and one of them fixed my the microstutters in games that I was seeing.
Possible Solution 1 - Disable windows fast boot. In my research I discovered that Asus boards and Ryzen both don't play nice with this. Nowadays most folks have their stuff saved ion SSD drives anyway so the benefit is minimal. I hardly see a difference in boot times with this disabled. https://www.tenforums.com/tutorials/4189-turn-off-fast-startup-windows-10-a.html
Possible Solution 2 - Disable Realtek HD Audio in device manager. This one could be tough for those that rely on this for their computer audio. There are sound cards out there that can circumvent this if you would like to go that way. In my case, I use an external card to produce sound so I don't need it. Other things to try are rolling back the driver, then if this doesn't work manually updating drivers.
Hope one of these solutions work for you!
This could be related to the issues the Ryzen 5000 platform appears to be experiencing with inadequate PCI-E Gen. 4 support. In case you have a recently released card that would utilize PCI-E Gen. 4, try going into BIOS and switching the PCI-E mode for the x16 slot to Gen 3 support instead of Auto/Gen 4. This has resolved virtually all of my problems.