Painfully slow exports with larger files

[chrisr29950087]

My export rate on current pics (in the 5600 x 3200 range) is between 3 and 7 a minute. This is with minimal adjustments and a crop, similar performance with camera raw files or jpegs.

If I go back to pics from my archive (around 2700 x 1500) I can export over 100/min from jpg, about 50/min from raw.

All tested with the same export settings, couple of times both with and without a resize.

I understand that the bigger pictures require more processing but the difference in processing time seems exceptionally high.

I've tried every optimization tip I can find too, no discernible difference.

I have older i7 with ssd, gpu. It's obviously capable of processing the smaller files quickly.

Am I missing something or anyone got any tips beyond the usual stuff?

[Ian Lyons]

It would be helpful if you provided details on the hardware (computer specification) and operating system you're using

[johnrellis]

One consideration: a 5600 x 3200 pixel image has 4.4 times as many pixels as a 2700 x 1500 image. The time for export is to a large degree dependent on the number of pixels, so you might expect export to go 4.4 times slower with the larger pics.   You're observing about a 10x slowth (50/min / 5/min), and thus about half of that could be accounted for by the increase in pixel size alone.  (This is all back-of-the-envelope, of course.)