I suspect this could be a resource issue - smaller HW will suffer more.

My Poser 2014 PRO has been running Windows 10 since last summer - no problems, plus I like the fact it can actually use ALL 24GB of RAM I have (plus I also have an AMD 8-core). Win 7 still has 2GB memory limits per thread - some signed 32-bit handle issue EVEN in 64-bit Win 7. Also, I reformat & rebuild my drive C about once a year, so I don't have a lot of old baggage. All of my data (& my Document, Video, Poser Content, etc) are on a secondary Drive "F" which is 2TB. Literally, there is nothing on "C" which I can't replace with a little install-elbow-grease.

I also have an Atom-processor netbook, which I moved to Win 10 & found it always runs at 50% CPU. I even rolled that back to Win7 (actually, I swapped in the old drive back in), but then discovered that it hadn't been much better (30-40%). So I went back to Win 10 & disabled a lot of things.

One thing I discovered - disabling OneDrive had a huge impact on the netbook - allowed it to drop from 50% to 11-20% CPU in one step. I do my backup/sharing on a 3TB NAS, so the OneDrive is NOT very attractive. I also disabled on the 8-core, but that didn't seem to notice & idles at 2-4% only.