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Mouse sensitivity extremely increases

Good day, I have the following problem with my mouse (Razer naga 2014) during Landscaping and Painting, and working with Foliage too: When I am selecting any brush, choosing any settings and starting to edit Landscape the sensitivity of mouse rises up to maximum values in the Viewport window. It becomes impossible to draw by HOLDING Left mouse button. When I just clicking and making "point-type" changes - everything works fine.

What I already tried: I updated my mouse software, restarted the computer, changed DPI to the 500, tried it with 1800, 4000, 8200 - result is the same. I also tried another mouse - some Logitech, which work fine without any drivers, but the same problem appears. I am using: iMac Late 2015 (27-inch), AMD Radeon R9 M380 2Gb, 8Gb RAM.

Will be thankful for any suggestions and help.

P.S. Previously I was working on engine version 4.7 on Win PC - with the same mouse, and everything was fine.

Product Version: UE 4.10
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asked Jan 26 '16 at 11:20 PM in Using UE4

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avatar image Trcioo Jan 27 '16 at 01:45 AM

Are you using FrameRate (fps) limit? It's well known this feature has big problems which makes the viewport accelerate.

avatar image PavelK. Jan 27 '16 at 07:55 AM

Hello Tercio, No, I am not using it. But if I will turn ON Showing FPS it seems that they are limited up to ˜32 FPS, and they can drop at some point up to 15. But, during Preview playing everything is fine. Could you please tell where to find this limit setting? Maybe it used by default

avatar image Mattias Hallström May 14 '18 at 03:26 PM

I have a similar problem when working with the Landscape Tool

When hovering over the landscape the mouse moves as expected. However: when I start to paint the speed increases drasticly and the mouse becomes uncontrollable.

I noted that if I change the the “camera speed” setting to any other value then the current value: The mouse is working properly at the first stroke of paint, but after that the mouse is back to the uncontrollable state again.

Is there any solution to this yet?

iMac 4,2 GHz Intel Core i7 NVIDIA GeForce GTX 1080 Ti 11 GB

avatar image PavelK. May 14 '18 at 05:50 PM

My solution was switch to Windows :) On the Mac, back in time, I wasn't able to make it work properly

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The problem is still exists...

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answered Jan 31 '16 at 09:56 PM

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