Display scaling also increasing pointer speed? Can I disable this?

I just downloaded the Fall Creators Update. I have 3 displays, two 1080p (FHD) monitors and one 4K (UHD) TV, which I use for playing video content and using my PC from across the room with a controller, mounted directly above the two monitors. All 3 run off a GTX 1070. I've always had the TV set to 300% scaling under display settings so that's it's usable for my bad eyes. The update seems to have added another effect to the scaling, which used to just increase/decrease the size of all UI elements. My mouse pointer speed, or sensitivity, has been increased x3 only on that display. I confirmed that turning off scaling also returns my mouse to normal function on that display.

Is there a way to disable this? I already use a pretty high DPI/sensitivity for desktop use, with so much real estate to cover, and the triple speed makes it nigh unusable for me on that display. I'm going to have to roll back if Microsoft really implemented something like this without making it optional.

bumping. Not to be rude freebooter but your response was equivalent to asking if I've tried rebooting. Completely unhelpful.

Well how am i suppose to know that you have reduce the mouse pointer speed you never mentioned it in your post. Do you know there are people who has little knowledge of how to configure a operating system they are using well i do they exist because i help them repair or solve there PC problems.

I think you're assuming my problem is something it's not. Please read questions carefully if you intend to try and help. I'm not going to pursue it further; since nobody else had anything to say, I went digging into the official support forums and found a Microsoft response that didn't offer a workaround, so it's essentially an unknown, incidental issue at this point. Marking thread as solved and submitting feedback through the windows 10 feedback hub. Upvote it if you're having the same issue.

Have you tried control panel > mouse > pointer options > uncheck enhance pointer precision? I do this to force the mouse to normal speeds at all times and I'm using 150% scaling on my laptop screen.

titetanium said:

Have you tried control panel > mouse > pointer options > uncheck enhance pointer precision? I do this to force the mouse to normal speeds at all times and I'm using 150% scaling on my laptop screen.

Yup! Had that turned off already of course. It's positively related to display scaling and it's positively something new with 1709. I don't know if I made it clear, but I get completely normal sensitivity on my 1080p monitors while simultaneously getting busted sensitivity on my 4K TV. If I turn on display scaling on the monitors, I get the same effect as on my TV. If I turn it off on the TV, it goes back to normal for the TV.

I'm willing to guarantee that if you set scaling to 100% or 50% you would immediately notice a difference in sensitivity on your laptop, if you're updated to 1709, regardless of any of the current options in Mouse properties.