mouse lag in video games since updating to win 8.1

I think it's because alot of people simply don't know they're playing with rawinput ON. In the case of rawinput, the game bypasses windows and gets its mouseinput straight from the mouse.

That's why they won't have an issue with rawinput ON.

This issue has gone on for too long, microsoft is trying to expand, but this isn't helping them.  Mouse movement is crucial to gaming.....

After doing some testing in CSGO (I did a fresh reinstall and it's currently the only installed game I have). I'm rather baffled at how severe the issue is.

m_rawinput 1 (enabling rawinput through the game's console) ---> OK

m_rawinput 0 (disabling rawinput through the game's console) ---> NOK

Without rawinput I get massive amounts of negative acceleration (yes I'm aware that WM_MOUSEMOVE/GetCursorPos can already cause this, but the values used were OK in this aspect PRE win 8.1) and sometimes a weird spike of positive acceleration. This is with both "Enhance Pointer Precision" ticked on/off.

Please be adviced that most gamers prefer "Enhance Pointer Precision" ticked off (linear acceleration curve).

Hardware used to test:

Core i7 2600k

Gigabyte P67-UD4 b3

Corsair 8GB Vengeance 1600 Mhz

Samsung 840 Pro 512GB

Mice: Zowie FK, tested on both 2300 and 1150 dpi

         Razer Deathadder Black Edition, tested on 900 and 1800 dpi

         Steelseries Sensei, tested on a wide variety of dpi's (can be set in steps of 90)

CSGO was also not reinstalled, my games are on a steam library on a different partition, nor did CSGO receive any update or change (usually happens on thursdays for me).

The workaround (compatibility mode) did not solve the issue either.

I'm pretty sure they overlooked something when they implemented this:

http://blogs.windows.com/windows/b/extremewindows/archive/2013/07/15/windows-8-1-dpi-scaling-enhancements.aspx

From Mark Cranness blog:

"In Windows 7, mouse pointer movement is scaled according to DPI. For a given on-mouse-pad mouse movement, larger DPI settings cause larger on-screen pointer movement.

An internal calculation includes a factor '* DPI'."

Source:

http://donewmouseaccel.blogspot.be/2010/02/windows-mouse-pointer-acceleration_28.html

Considering from what I have seen in CSGO this issue is rather severe. Thank god CSGO has rawinput, because any game that doesn't have rawinput is currently severely impaired.

That is good info; although this is going to be a tough one with other people reporting no issues even with similar HW configs.

i'll check CS GO even though I think if the issue is present it would have affected my other games by now.

m_customaccel "0"

m_customaccel_exponent "0"

m_customaccel_max "0"

m_customaccel_scale          "0"

m_mouseaccel1 "0"

m_mouseaccel2 "0"

m_mousespeed "0"

Might want to add these values to the console/autoexec of CSGO too, aside from just m_rawinput 0 when testing. They'll remove any possible form of ingame acceleration, so there's nothing that can "mask" the problem.

Also considering the negative acceleration I experienced, it might be possible that a high sensivity (800 dpi 3.0 ingame for example) could mask the problem as well.

Either way if they can't pinpoint the problem it would be nice to at least have some sort of "Revert back to old behavior" for the DPI scaling option or in the mouse panel. Obviously dpi scaling across multiple monitors won't be as nice but they can state that when we press the revert back button :p

Based on your suggested settings, my guess is you have no custom software running for your mouse? most software tends to add its own "accel" values to the mouse' onboard memory, this is why I ask.