Is there a way to speed up working with large files in Photoshop? Like proxy editing?

Question

I am currently using a camera that produces 60mp+ raw files which I pre-correct in Lightroom and then load into Photoshop for final editing.
As I have around 10 layers with various corrections, the file size ends up somewhere between 2 to 3 GB per photo. Plus I have to use Photoshop's large file format. At this size, my iMac (32 gb, Quad Core i7, AMD Radeon R9 M395X 4 GB) starts to become a bit sluggish. Quick-saving takes around 1.5 minutes (all on local SSD).
I wonder if there is a way to export a downsized version from Lightroom, edit that and then reapply the whole history to the full size raw in one go. A bit like proxy editing in filming.
If there any tricks that you can share?

pauljeba · Answer

There are many parameters that you can tune to get the most out of your machine in Photoshop SOURCE
Some highlights from the official source above:

Check the cache settings and make sure the settings are at optimum
Reduce the number of history states
Don't have any other program that can consume your available memory running in the background.
Allocate separate space for your scratch disk

Is there a way to speed up working with large files in Photoshop? Like proxy editing?

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