I realize this is VERY old but since I am running CS5.5 on Windows 10, I thought I'd chime in for others who are against subscription based apps. I'm a novice and will NEVER pay for Premiere subscriptions. I paid through the nose for CS5.5 already.
I did a Windows 7 Pro (in place) upgrade to Windows 10 a few years ago and Adobe CS5.5 works. My MB is an ASUS P6T from 2012-ish, Intel XEON X5675 overclocked to 4.3GHz, 16GB ram, and nVidia 3090. That's the good news. The bad news is that it's very laggy. All dirvers are updated but the hardware is very old except for the 3090 which is an awesome Gcard. CS5.5 ran very fast on Windows 7 and never lagged. It used to crash after the file size increased unless I turned of the header icons. Windows 10 doesn't crash with them turned on, But... If you zoom into the timeline past the last 3 notches, you can't stop playback. It will keep playing until the end of the sequence or you kill the app. God help you if you're at the beginning of a long sequence and haven't saved in a while. Your choice is to kill it and lose new work or let it play to the end and save your work.