AB350 Gaming-ITX, pcie x16 switch, and latency?
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=8672
Printed Date: 10 Feb 2025 at 11:04pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: AB350 Gaming-ITX, pcie x16 switch, and latency?
Posted By: siz
Subject: AB350 Gaming-ITX, pcie x16 switch, and latency?
Date Posted: 12 May 2018 at 7:03pm
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Hello, I
got the Asrock Fatal1ty AB350 Gaming-ITX/ac yesterday, and I've had big
problems with latency which I found out because my audio and mouse stuttered in
windows when just loading programs. In games it was awful. I had already
updated BIOS to 4.60, installed latest AMD chipset drivers & Nvidia drivers
and updated Windows 10 (& Intel drivers LAN through windows). Using
LatencyMon I could see big delays in especially dxgkrnl.sys, nvlddmkm.sys, ntoskrnl.exe
with > 200 ms in highest execution time (could also see some delays in
ndis.sys and wdf01000.sys) Removed
Nvidia drivers and tried with older and older drivers, no luck. Disabled all
kind of power management options, no luck. On reddit someone had tried switching to PCIe x8 and it worked for him. So
I tried switching to 2x8 in the Bios under 'Advanced -> AMD PBS -> PCIe
x16/2x8 Switch'. Didn't work. However, through trial and error (still latency and some system crash while loading games), using the
following settings removed my latency problems
What is difference between 'PCIe x16 Switch' in Gen 1 and Gen 2? Are with talking about PCIe 1.0 vs 2.0 -> 4 GB/s vs. 8 GB/s bandwidth, shouldn't it already be PCIe 3.0 x16 with 15.7 GB/s? Will it affect performance? If it does, what to do? Lastly, on the motherboard page https://www.asrock.com/MB/AMD/Fatal1ty%20AB350%20Gaming-ITXac/index.asp" rel="nofollow - https://www.asrock.com/MB/AMD/Fatal1ty%20AB350%20Gaming-ITXac/index.asp , it says USB 3.1 Gen1, however on the box, in the manual, and on the shroud as seen on the page it says USB 3.0. Which is it? Maybe update the page.. My system:
Thanks in advance!
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Replies:
Posted By: siz
Date Posted: 12 May 2018 at 8:36pm
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Using PCIe X16 Switch -> Gen 2, it crashes after playing 30 secs of CS:GO.. No apparent latency problems.. EDIT: Reverting Windows to 1709 does not solve the issue :/
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Posted By: Statix
Date Posted: 23 Mar 2020 at 3:27pm
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I'm glad someone else also has the same problem with this motherboard. I've been struggling with input lag for a while now, even swapping GPU's (I've tried RX 580 and GTX 770). Was that PCIe Gen 1 setting a permanent latency fix for you? Also, can you point me over to the reddit thread that you mentioned, where people were discussing the busted PCIe bus on this board? Thanks! |
Posted By: gizmic
Date Posted: 23 Mar 2020 at 4:56pm
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input lag is a monitor thing ------------- 
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Posted By: ThreeDee
Date Posted: 24 Mar 2020 at 12:00am
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I run this mobo in my daughters rig with 2 x 16GB 3000mhz, 3600x and currently running an RX570 (GTX 1060 3GB prior) without issue. Make sure you are running the latest bios and grab your intel network drivers from Intel. I had issues with ASRocks network drivers that would cause random BSOD's. Running Windows 10 with latest Radeon vid drivers and AMD chipset drivers as of 3-23-20. 1080p 60hz monitor with wired keyboard and mouse .. if you are running wireless, that could be a source of "input lag". This little motherboard has been a good performer with a 2200g, 2700x and now 3600x cpu's. Using 2200g for video, then GTX 1060 3gb and now RX 570 4GB without issue. Fortnite played surprisingly well on the 2200g. ------------- |Ryzen 5 5900|ASRock X570 Taichi-BIOS 4.60|2x16GB HyperX Predator RGB 3200@3600 1:1 IF|ASRock RX 6700XT|2 x PCIe 4.0 M.2 Drives for OS & Games|850 WTT Seasonic 80+ Titanium PSU|Noctua NH-D15| |