Lightroom Classic: Very slow rendering in Develop module

Reading this 12 months on and nothing has changed. Lr CC is imo still unusable. I plough through my weddings screaming at every single picture. I am also amazed that this has been released. I cannot wait until my quiet period so I can get this dinosaur out of my work process. http://www.simongrahamphotography.com/adobe-lightroom-is-a-bloated-overweight-monster-that-is-costin...

Yes 2007, Does that sound strange? LR even the CC version is not a resource intensive app and you certainly don't need an 8-core system to get moving just fast.
Actually, what's the hurry? On a side note the El Capitan and its predecessor are not graphic friendly; some videographers and photographers running the state of the art Mac hardware have all downgraded to v 10.9. You may consider that option and put your blame on LR CC elsewhere, perhaps.

I'm on El Capitan. You're realy on 2007? Okay... i think we have different perspectives of "performance" 😉

Which OSX are you running? If you are on any of the last upgrades, then that's the culprit.I am on 10.9.5 and my system is 2007, yet no issues with LR CC after resolving the Wacom problem.
Heck! only if I could remember which of the preferences that I disabled, unplugged the Wacom and back; afterward I am laughing all the way. Try the help desk again and it is free.

nope... no difference with or without the wacom driver!

Karlis, if you are using the Wacom tablet, uninstall it completely. Alternatively, un-plug the tablet and back after after disabling some setting in the preference file. I do not remember the actual setting (not the GP alone). You may contact the online live help/assistance for details.

Here are a sample real time screen capture: https://www.dropbox.com/s/8uxa2icy0xj...

Is this the usual "speed" of lightroom? By the way: i work with a NEC 4K 32" display...

Also without any editing presets (default settings) the images where displayed first for a very quick moment with flat colors, then with the "right" colors but pixled and at the end fully sharp – this takes maybe 2-3 seconds.

JPEG-Export in C1 takes a quarter or less as in LR 😞

Part of the loading time will depend on what you've already applied to the photos, perhaps as defaults or presets. Things like lens corrections, noise reduction, anything that builds a mask like highlights and shadows, dehaze, local adjustments, etc. can extend loading times. Are the photos at Adobe's defaults when they're taking 1-2 seconds, or with some settings applied?

For export, again, we need timings for comparison against known averages. You can 'turbo-charge' exports by splitting the export in a couple of batches and run them concurrently.

Hm :-(

The working with sliders are fine... but the time till the image is load completely and fully sharp takes sometimes 1-2 seconds. I think it's to long for this highperformance hardware and the "little" raws (nef) from my nikon d750's

And the performance from the export to jpeg files are also very sloooow (compared against CaptureOne Pro 8).