Thought this was solved following Wainui's suggestion. Seemed ok with only a couple of stalls but now back again, so have restarted the thread.
HP running W10. Is only a few months old.
Disc usage randomly goes to 100% which stalls everything for a few minutes.
"In the Search type in Notifications, select notifications and Action Settings -- under notifications, disable the lot.
Next go back to the home Panel in Settings, go to Privacy, on the Left - Bottom - Background Apps - When they populate, turn OFF all of them - Reboot the PC should now be a lot faster."
Any help greatly appreciated.