Help fix my serious mouse issue...

Oct 13, 2017
3
0
510
<REDACTED>I'm losing my sanity trying to fix this dam thing for months. I took it to a PC tech shop and the two guys were stumped and unable to fix it. However, I stopped going there due to money risks of paying for another type of service just for it to not work either. I also took it to my ex-manager at a gaming PC cafe shop, and he was unable to figure it out either. There were a lot of trial and errors between all of us trying to fix this mouse issue.

The problem seems to occur during windows mouse sensitivity at 6/11, 8/11, or 10/11 of the slider. Enhance pointer precision is off. At 7/11, 9/11, or 11/11, it seems to be fine, but still feels awkward because of how the mouse movements are calculated at these values. My goal is to remove this problem so I can comfortably play at default windows mouse sensitivity of 6/11.

The Problem:
When I slowly move my mouse, the mouse feels like it's "resisting" to move. It makes these small pauses or "skips" whenever I try to do slow mouse movements. It feels like it's decelerating when I make small movements. However, when I move my mouse relatively fast, the issue doesn't seem to be present, or at least very barely noticeable, but it feels fine at higher speeds.

Things I have tried:
- Different mouses
- Plug mouse into different USB ports
- Trying MarkC's Acceleration Fix mouse application (Mouse Registry changes)
- Reinstalled and reformatted Windows 10 (I did have Windows 8 or was it 8.1... before, then upgraded to Windows 10)
- Change to a new Hard Drive
- I bought a new monitor, but I had to change it anyways. (I bug sprayed my previous monitor because of 2 flies on my screen, and it wouldn't turn on anymore LOL, so stupid, bloodlust got the better of me)
- Taking out GPU and using the integrated graphics instead
- Installed new RAM
- Flash the BIOS on my Krait Z97S SLI edition motherboard
- Change new motherboard to the ASUS Z97-E motherboard
- Literally brought my desktop PC to the tech shop and the PC Cafe, same issue over there
- Other small various fixes like checking device manager, reinstalling Razer Synapse, etc.

Only thing I can think of doing next is to install and try a new CPU...

My Rig:
Intel Core i5-4690k @ 3.50ghz Processor
GTX 980 Ti GPU
8.0GB of RAM
ASUS Z97-E Motherboard
WD Blue 1TB Hard Drive
(Not sure what else to put, let me know if you need any more info for my rig)

Please help ;_;
 
Solution
Originally, PS/2 i/o support was added by a dedicated microcontroller chip by Intel called the i8042. The function of this chip was later combined into a multifunction IC called the AIP, but still includes a dedicated fixed-function CPU to control mouse and keyboard. Note that before the USB driver loads, your BIOS emulates this chip with USB Legacy support, so if the mouse works normally in Safe Mode, this suggests the problem is with the USB driver.

No, even if the mouse works normally on PS/2 because it's not as dependent on the CPU as USB is, the issue with occasional 100% CPU use will still be there. You have to remove or disable devices one at a time until you find the culprit, and it can be something strange like the ethernet...
Goodness, unless you need n-key rollover on the keyboard, just use a PS/2 capable mouse like a MX518 as a workaround.

The 200Hz PS/2 sample rate registry hack still works fine in Win 8.1 and 10 too, plus PS/2 doesn't use up CPU like polling USB at high rates does.
 
Oct 13, 2017
3
0
510
Is it possible for a CPU to adversely affect the mouse, maybe in my case? If so, how? My games seems to run perfectly fine, no stutters or anything. Unless there's a microscopic component within my CPU that's directly targeting my mouse, hell I don't know. Also, I'm not fond of using the MX518 mouse as a workaround, I tried several other different mouses already. What if the issue is still there? What if the CPU isn't the cause of the problem? I feel like changing the CPU HAS to work since I've eliminated so many options to try and fix this mouse issue. However, I'm anxious that it might not work, so I'd let to know of any possible alternatives to fix this mouse issues for now, like maybe something software related...
 
While it could indeed be a hardware issue, it's highly unlikely to be the CPU and in fact most likely to be some malfunctioning driver periodically spamming the CPU with interrupts. That's why I suggested PS/2--the AIP keyboard controller essentially has its own CPU onboard so does not rely on the availability of the host system's CPU.

I would troubleshoot this the same way I would troubleshoot DPC latency issues--disable one item at a time in device manager while watching for the latency spikes to stop. That's how I discovered an ATA disk controller driver was causing audio to stutter, and a printer was causing Windows Explorer to freeze every few seconds.

As for Razer Synapse, do you honestly need to use a 100MB program to store your mouse settings in the cloud? It can even track all of your mouse clicks and map where on the mousepad you move the mouse most, then instantly upload those stats to Facebook and Twitter, but does this sound remotely useful to you? I mean, what if you have to choose between decorative LED lighting effects and a mouse that works?
 
Oct 13, 2017
3
0
510
What's AIP keyboard controller?

All the mouses I tested have been USB mouses so far. So, say I do use the MX518 PS/2 mouse and the mouse issue is completely gone, then can I assume that the CPU is the issue and needs a replacement?
 
Originally, PS/2 i/o support was added by a dedicated microcontroller chip by Intel called the i8042. The function of this chip was later combined into a multifunction IC called the AIP, but still includes a dedicated fixed-function CPU to control mouse and keyboard. Note that before the USB driver loads, your BIOS emulates this chip with USB Legacy support, so if the mouse works normally in Safe Mode, this suggests the problem is with the USB driver.

No, even if the mouse works normally on PS/2 because it's not as dependent on the CPU as USB is, the issue with occasional 100% CPU use will still be there. You have to remove or disable devices one at a time until you find the culprit, and it can be something strange like the ethernet controller. Once I had a hard disk annoyingly cause the mouse to momentarily freeze every second--replacing it with another model disk fixed it and the original drive causes no problems in another computer today. While you've already replaced your disk, the point is it can be anything.
 
Solution
May 24, 2018
1
0
10

I have the same exact problem as the op, literally word for word. And I read your solution and immediately saw the light. I've had this problem for a while now like 6 months and its driving me insane. 8700k,msi z370 sli plus, 1080ti,zowie fk2 mouse. Now, when I disable/unplug my ethernet connection in the back, my mouse goes back to normal speed/smooth movements. I don't overshoot clicks, its not "icey and jittery" my curser doesn't skip and look unnatural as I move it slowly across my screen. Then if I enable or plug my ethernet connection back in, the problem instantly re appears. I know this is like a year old thread but I have found the culprit, my ethernet port. Please tell me where do I go from here? Completely replace my motherboard? RMA? Is there another work around? Please help, this is crippling. A lot of money spent on this setup, Thank you