I'm not sure how directly related to Win 10 this is, but since it started along with the update, I'll post it here.
I've an odd situation I can't seem to figure out. It's an annoyance more than a serious problem, but still...
I run three displays off of my AMD Radeon HD 7970 - a SyncMaster (2053BW - 20"), a Dell (E2414H - 24") and a LG (TV - 42").
I use the 'extend my display' option and have all three acting as a single horizontal display. I would (until recently) drag my apps, browser, etc. from either of the displays to the TV without issue - the resolutions were nearly identical (that is, I didn't really have to adjust the size of anything when I dragged between them).
Yesterday, I finally updated my system to Win 10. This required I update my drivers and such from AMD, so I got the most recent version for Win 10.
Now, the TV's display resolution appears...huge. When I drag anything from either of the other two displays to the TV, it is some four times as large. It's a pain to try and fit it in enough to even be able to grab a corner, drag to resize, move it again, drag to resize - I have to do this 2-3 times just so it fits within the display. Pain in the butt.
But here's the thing - the resolution in my AMD panel shows the TV res being identical to what (one of) the monitors is; 1920x1080. It is the maximum (and recommended) setting available. I have no clue what has happened, or what to do to correct it at this point.
Any ideas what has happened? Thanks!