Won't load file until key pressed / focus lost

[Hordecall]

Hello,
When I load a file using the menu, the cursor appears as to be loading and then stops. Nothing happens until I press a key, and then suddenly the file loads correctly.
I'm running Windows 10 and the file and Photoshop are on two different hard drives (if that matters).

Hope it helps,
Hordecall

[Hordecall]

Actually - it loads when it loses focus (as in using alt-tab to switch to another app).
It does the same thing with different files and also with the Open button.

[J453 · Accepted solution]

Let's make sure we're in a default state and there are no stale setting somewhere:
Restore your preferences using this manual method:
https://helpx.adobe.com/photoshop/using/preferences.html#Manually
Does it work correctly?
If that doesn't solve it, you can quit Photoshop and put the Settings folder back.
If it does solve the problem, I would like to get the folder of settings to try and figure out what is bad with them.

[Hordecall]

Oh my, sorry I hadn't seen the answer.
It seems to have solved the problem.
Where do you want my Settings folder ?