I'm just reading some of your older postings and came across this.

I know the feeling you mean. I have experienced it myself a few times, though sadly not recently. I can't supply a word for you, I'm afraid. I was going to suggest 'hyper-reality' which seems to describe the feeling but already exists as a word / concept and means something quite different, apparently.
I remember some years ago reading a Louis MacNeice poem that captured it pretty well, especially the final lines of the first two verses. You probably know it but here it is:

SNOW (Louis MacNeice)

The room was suddenly rich and the great bay-window was
Spawning snow and pink roses against it
Soundlessly collateral and incompatible:
World is suddener than we fancy it.

World is crazier and more of it than we think,
Incorrigibly plural. I peel and portion
A tangerine and spit the pips and feel
The drunkenness of things being various.

And the fire flames with a bubbling sound for world
Is more spiteful and gay than one supposes -
On the tongue on the eyes on the ears in the palms of one's hands -
There is more than glass between the snow and the huge roses.

© The Estate of Louis MacNeice. Taken from Collected Poems, published by Faber and Faber.