Andrew Wysocki

I have a similar issue, my view rapidly turns (about 3-5 times faster than normal). It happens when I hold left or right mouse button, it is normal all other times. I have tried 3 different mice from 3 different brands, clean install on all for the drivers.
Happens most every time I run minecraft, so far through default minecraft launcher, FTB, Curse, and Pixelmon launchers. I have no 3rd party software installed for mouse tools other than provided mouse software. Also has happened in multiple versions of minecraft, first noticed in 1.7.x no change since.

Have tried a few different methods other people have had with the mouse, one of which was changing graphics settings in nVidia control panel, no change in the problem. I have also tried to lower the priority of Java in Task Manager, no change in the problem.

The mice I used are Logitech G502, Razer Naga 2014, and a cheap un-named brand.

Intel 4790k
32gb ram
2x MSI GTX 970s in SLI
Asus ROG motherboard

I don't understand it. Now it works perfect every time. Nothing has changed on my computer. Guess this is resolved until it happens again, been good for a few days.

I am so confused. I open Minecraft one day and it works completely normal, I close and open it back up and I get a random issue. Sometimes it is just a quick mouse movement in the direction I move the mouse that quick enough to spin me ~270 for something that would spin me about 45. Then other times, it happens only when I am pressing a keyboard button and a mouse button, but works fine if I don't touch my keyboard. And other times I open up Minecraft the problem comes and goes with no set combination besides for a mouse button being held down but it does not always do it.

I don't even have to restart my computer. It changes by restarting Minecraft. Not always changing/fixing. Usually takes a few restarts of Minecraft till it finally works normal.

My keyboard is a Corsair K95 RGB as well, if that changing anything. I don't run any software besides the basic software that comes with the devices I have. There is no KVM switch or mouse sharing software on my computer.

Well it happens on all FTB modpacks, the Minecraft.exe (no mods added), and Curse Client. So yes.

Also no, MC-15120 does not describe my issue. His issue was his view would spin non-stop. My problem is that my mouse movements are amplified at least 5 times when I have the left or right mouse button held down of now 3 different mice (I recently also tested my wife's unbranded mouse that has no drivers associated)

No. I have nothing on either mice besides their basic software.

This is also the only game that has this issue. No other games that I have played so far since it occurred have had the same problem.
On another note, this is not just Minecraft but also happens on the FTB mod packs.