Mouse Sensitivity issue

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Hey. I have this problem, which is unique to this title. ONLY MW3, and it just happens sometimes, and even after it its weird.

The problem itself is annoying. The mouse sensitivity bounces like crazy, throwing off my aim. This is what i mean:
https://www.youtube.com/watch?v=dK9Ct3vKEXc
But in my case it seems to be more severe.

Things like mouse smoothing/acceleration are turned off
DPI is 2200, which was and IS fine for the most part.

Thanks in advance

Edit:
I ran integrity check
Closed down unneeded programs (skype, teamviewer, browser...etc), problem still the same.

[^0IDC ^4J^5oh^4n^4C^5off^4y]

I assume that perhaps you have switched on "Enchance Pointer Precision" which is under mouse @ Control Panel, other thing is about your DPI, 2200 honestly is way too much. Mostly people stick to 400-800 DPI, same with me - I`m still using Microsoft Wheel Optical Mouse, which costs around 5GBP.

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sorry, a little back story.
I went on holiday 2 weeks ago - everything was normal. I came back, fired the game up, and it started this stupid thing.
nothing has changed since, as my pc was turned off for 2 weeks, I am using a gamer mouse pad also.

Pointer precision is turned off as well

[^0IDC ^4J^5oh^4n^4C^5off^4y]

Don`t get me wrong, i also own Death Adder 2013, but i found it too heavy for myself to feel comfy in game. Best thing for you might be to just "google" things like - Win 7 mousefix and Quake Live config, by default QL sens is 5 in pair with 2200DPI it makes huge speed for pointer, besides if you have acceleration problem that might be cause of that sens bouncing.

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Thanks for the reply, but i already said that i have acceleration turned off. It cannot be the problem. I also find it weird (also annoying) that it only affects MW3 - nothing else, regardless of settings, and it was fine just before... :/

[76561198146916803]

You could try changing the process priority from "high" to "normal". For some reason Infinity Ward makes their games run on high priority while just about all games in the world run on normal. I'm not sure what else it could be other than CPU or GPU bottleneck or clean your mouse pad + laser eye. One thing to keep in mind is MW3 multiplayer uses a laggy P2P host system instead of dedicated servers. You may just be getting host lag. Verify the game cache to get that out of the way. I agree that your DPI is too high.

[^0IDC ^4J^5oh^4n^4C^5off^4y]

Perhaps that thing "wake up" after an update, not sure but might be, because today I was forced to move to Steam cause game "hanged up" on loading screen. However it`s still a good idea to test your mouse with Accelaration tracker, to make sure that Windows is not turning it on when you join game. Also I hope that you know about USB boost to 500mhz or 1000mhz - thats personal, depends how each person finds it.

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Green:
Tried that too, even Low, nothing helped.
cpu gpu bottleneck? would be weird, considering the game ran perfectly fine before.
Mouse cleaned carefully and mousepad is fine as well
Lag has nothing to do with my aim -- by that i mean, my hand has a "perfect" settings, meaning i ahve to fine tune every twich shooter:
My crosshair has to do 180° when i move the mouse >this< much. Now its completely fubar.

DPI might be high, but sensitivity is low. Same as if DPI was lower but sens was higher.

@JCoffy:

Could not find that software you mentioned - is the name correct? (tried looking it up with google, also tried similiar names)
I am currently looking at the settings - both windows and logitech software, and everything stayed the same