Do your windows update but only select what applies to your pc/laptop.
If FSX Gold, reboot and start fsx inbetween each fsx package you install.
Although I have had no trouble on my win 7 64bit, some people do have trouble, try turning OFF the UAC in control panel/user accounts, prob best if you turn this off, uninstall and re-install again.
If FSX Gold:
Install the fsx, (not in program files (86) tho that is where mine is) reboot, restart fsx, loadup default flight, maybe even take off then exit fsx.
Install the Acceleration pack and updates and do same again, start fsx, fly and exit so that fsx rebuilds it's databases again.
If not FSX Gold, install FSX then search on Microsoft FSInsider for the service pack updates.
Otherwise afterwards with UAC turned ON, run fsx as administrator, right click on the FSX icon and select run as admin.
What happens if you install on a physical hard drive?
Thank you EVVFCX for the reply.

I have regular FSX (i.e. non acceleration) so I've installed FSX with patches from FS insider (I'm fairly adept at this normally!) with no issues on a physical drive and it seems to work just fine! ??
Thing is, "micro stutter" has returned, which is annoying as the whole idea behind the SSD was to eliminate this.
What puzzles me most is previously I've had FSX running beautifully on the SSD, for some reason, no longer....
I'm assuming it must be something to do with my SSD, that said, everything else runs perfectly - and loads quickly due to the SSD.
Any thoughts appreciated.

Posting drivel here since Jan 31st, 2002. - That long!
"He who laughs last, thinks slowest."