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Mouse bug in windows7
Can this problem be fixed?
If you are using Windows 7 or Vista, you will have these random accelerations occur. The only way to reduce it that I have found is to lower the polling rate to 125hz. It has nothing to do with hardware, it is just the way Windows deals with filtering mouse movement.
If you have access to TF2 or CS:S, try using RAW INPUT and report back your results. I am an avid CS 1.6 player and currently there is no fix to what you are describing. To save you some time and effort, I have a compiled a list of workarounds that I have already tried unsuccessfully.
For others to understand the problem, it is important to note that it is completely random and for some very hard to notice. However, on my system personally it is almost like my DPI has doubled for a split second. VERY annoying.
Hope this helps you understand things a little better.
PREPARE FOR WALL OF TEXT
Inconsistent Mouse Speed Windows 7
System Specs: MSI-P55-GD65, Intel i5 750, 4GB DDR3 OCZ RAM, BFG 260 GTX, Sound Blaster X-FI Titanium Fatality, 2x Western Digital Caviar Black 500GB fakeraid 0 on Intel ICH10R, Corsair 650w PSU, Windows 7 64-bit Home with all windows updates.
I have a problem with mouse speed changing randomly while playing any HL1 or Source based game. I haven't tested in other games enough to be sure its happening there.
Imagine having 2 identical systems next to each other, both with acceleration disabled, and both mice moving at a constant speed across the mouse pad. The good machine's sensitivity remains at a constant speed and the bad machine's seems to jump ahead about 30-60 degrees for about a half a second and then smooth back out to normal.
To save some time in help with troubleshooting, here is what I have already attempted as possible fixes. The only fix I am positive about is that this issue DOES NOT OCCUR in Windows XP 32-bit.
-Old video/sound drivers
-Newest video/sound/chipset/network driver
-Fresh install
-Replacing my ATI 4850 with this 260 GTX
-New HDD's, running IDE, AHCI, and RAID 0 (I've tested them all)
-RAM timings (RAM has passed Memtest 4.0+) I've already tried replacing RAM as well
-All graphics options in Nvidia and Catalyst Control Panels didn't fix issue (Fresh installs each time I put a different video card in)
-Vsync is always off
-Disabling sound completely/using onboard sound
-MSconfig start-up turned off
-Windows 7 Anti-Malware process disabled/Windows bit defender or Microsoft Security Essentials
-Refresh rate 60/100/120hz
-Mouse polling rate 125/250/500/1000hz
-Razer Deathadder/Logitech g500/mx-518/microsoft wheel mouse optical/Steelseries Xai/Microsoft ball mouse ps2/ZOWIE EC1
-Using no mouse software drivers/using mouse drivers
-Compatibility mode for all available O/S's including running as admin and other check boxes each checked individually or together
-Heat temperatures are completely fine/air flow in case is good.
-processor has been checked and is seated properly
-MarkC Windows 7 mouse accel fix]
-noforce commands for hl1 engine
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