We need to know a lot more about your situation.
Tell us your computer hardware .... CPU and memory in particular.
Tell us your operating system
Tell us the exact version NUMBER of Lightroom.
Tell us how big in megapixels (do not tell us megabytes) these "simple JPEG files" are.
Tell us what other programs are open as you are doing this.
You are exporting 500 photos in an hour, that's 8.3 per minute which is one export every 7 seconds or so, that doesn't seem too unreasonable to me, depending on a whole lot of things mentioned above.
Thanks for the reply dj_paige
The only program I have open is LR. I may be asking a little too much from my machine but I remember previous versions of LR be a lot faster on export.
4GHz Intel Core i7
AMD Radeon R9 M295X 4096 MB
Lightroom version: CC 2015.5
What is the exact CPU??
And please provide the other pieces of information that I asked for
iMac Retina 5K OS X Yosemite
The original RAW files are 22MP .CR2 files.
My export files are 2MB 300 DPI
Okay, we seem to be mis-communicating.
I don't see the exact CPU that I asked for.
Its an Intel Core I7 4ghz iMac. See post #2. The EXACT CPU model shouldn't be that relevant. The OP's Mac has specs like mine except for 8GB vs my 16GB. I just exported 44 22MP CR2 files and it took 2 minutes.
Bob Somrak have you noticed any difference in previous versions of LR, as far as export speed?
7 seconds per image is not unreasonably slow but still slower than I would expect from that machine. Are there heavy edits on these images? Are you scaling on export? Are your images on the internal SSD drive or on some external harddisk?
PS if you saw this slowdown upon updating Lightroom, you might want to try resetting the preferences. Quit Lightroom and restart it while holding option and shift. This takes care of some slowness issues that some people experience. You might have to redo some settings after this as it resets them to factory default.
I can't compare as my previous Lightroom was on an old iMac and Lr 6 is on a new iMac (Late 2015 4gh I7 16GB and SSD) My Speed was about 3 seconds per photo on my new iMac so your 7 seconds per photo would seem reasonable if you have a spinner drive instead of an SSD.
Thanks for the tip I will try this and update!
I'm running internal SSD and external G-Tech drives via USB 3. Exporting directly to external drive (original files are living in the same external drive)
Internal SSD used exclusively for the operating system and apps.
Your system compared to mine is pretty similar except for 8gb vs 16gb. One difference is I am using an external Lacie SSD on Thunderbolt for the photos and catalog and exporting to the internal SSD. Try doing the export to the internal SSD as reading the RAWS from the external and then writing the exported JPG files back across the USB3 might be a bottleneck. Is your external a spinner or SSD drive?
I highly recommend the Lacie SSD on Thunderbolt. The read/write speeds are phenomenal.