Be specific. Exactly what actions in LR Develop Module are slow?
Did this start when you began using the 5D Mark IV? Have you changed any hardware recently?
Are you doing a lot of brushing and/or spot healing?
How big is your monitor (in pixels)?
everithing is slow in develop module
croping , modifying light or balance of light , every simple modifications is very long
if i switch to a folder with with 5DMK2 pictures it s running back on the track
i am not doing brushing or healing but only simple light and croping modification
My monitor is full hd 1920
It s started with this files of 5DMK4 and the only modification i have made recently is installing Photshop CS3
Thank you and sorry for my english , i am in france
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I see two problems.
One problem is that your CPU is 6 cores, and the general consensus (unfortunately) is that Lightroom runs slowly on a 6 core (or more) machine, and that the problem doesn't seem to exist if your CPU has 4 cores.
The other problem is that the 5DMK4 photos are 36% bigger that the 5DMK2 photos, and your CPU is very old, and apparently it is not fast enough to edit these larger photos with the same speed.
Ideally, you want to purchase a 4 core CPU that is relatively fast by today's standards.
Another thing you can try with the 5DMK4 files is to create Smart Previews, and then use those when you are editing, this should go faster.
thanks for your Help
when i look to processors monitor they are not 100% utilisation , never , but im waiting in front of my screen
Buying a new computer look strange for me
the cpu is not at full utilisation, and i dont like the Trash bin Macpro
i cannot understand why 35 % make à so Huge différence between super fast instant and very very long to react
I dont want to go back to pC
is is There an optimisation scheduled by Adobe for 6 cores machines ?
Is it possible to. Something else?
i am going to try smart previews
i try with the GPu but it makes no différence
Thank you so Much
GPU is irrelevant here.
No one knows when Adobe will fix this 4-core issue.
I don't have any other ideas about your problem other than what I already said, but definitely try the Smart Previews.
I do not see any difference
do i need to delete the actual previews files ?