Low FPS/ stuttering while dragging [wireless] mouse in specific games. [FIXED, HALLELUJAH

Never heard of that but might find help in some of these https://www.google.co.uk/search?q=mouse+in+certain+game+causes+the+game+to+stutter.&ie=utf-8&oe=utf-8&rls=org.mozilla:en-US:official&client=firefox-a&channel=rcs&gws_rd=cr&ei=vn3wUtG8M8ry7Aarr4H4AQ

win 8.1? try > http://support.microsoft.com/kb/2908279

source http://linustechtips.com/main/topic/67129-windows-81-causing-major-mouse-stuttering-issues-in-certain-games/

edit: i would personally never use anything like 'dllfixer' or 'tune up utilities', in fact I'm pretty certain its actually Malware/spyware/virus.... be careful what you install! So you may have another problem.

Make sure Raw Mouse Input is selected in Half Life 2 and other source games. If you have windows 8.1 follow the links by the guy above, it's a known problem.

Update: I have tried turning on Raw Input and turning off Mouse Acceleration in CS:GO but it did no good. I also tried changing registry, option in Mouse but it did not do anything for my problem at all.......sob :(

However, there is one huge progress...I think: Even though I still suffer horrifying lag when dragging my wireless mouse, it's not laggy much at all when I used the Touchpad on my laptop in CS:GO but still bad compared to the fps I used to have. It's still laggy to a lesser extent when I used the touchpad compared to when I moved my mouse around in Starbound.

Does the use of a new mouse (bought 2 weeks ago) have anything to do with this?

I also updated the driver for my video card, if that does mean anything. I also tried to turn off Vsync for all those game that were affected.

I think that it's relevant that most of the games are source engine. I would try reinstalling drivers from your computer's manufacturer (if using a prebuilt) or component manufacturers, even for silly things like motherboard.

Have you V-sync enabled? It causes annoying stutter in ALL Valve games for me.

Valve cannot do Vsync. At all.

I remember hearing something about Windows 8 or Windows 8.1 having mouse stutter issues. If that's the problem, [this article](http://might help you fix it: http://www.howtogeek.com/175722/how-to-fix-mouse-lag-in-pc-games-on-windows-8.1/) might help you fix it.

1) deinstall all the "cleanup" tools - they're basically useless. You can leave CCleaner though. But everything else -> uninstall.

2) What's your computer's Hardware? Detailed please

3) Have you tried using a wired mouse instead of a wireless one?

FINAL UPDATE! I have fixed the problem! It was a facking malware, the stij.exe and after neutralized that bloody bastard, everything is working all fine and dandy now!

I am sooooo relieved. My deep appreciation for the people who have been suggesting solutions for me so far. Here are sth for you:

Lunar Flight Steam Key: QL0WN-FW7PC-K7GDL
Dogfight 1942 Steam Key: KKYBB-QAZQQ-P27M6

It's not much but I will try to repay you more later! Please comment if you activated a key successfully, much appreciated!