Participating Frequently

Answered

Lightroom Classic Unusably Slow and hanging while also slowing down whole pc

16 replies
1081 views
Translate

Whenever Lightroom Classic is open, let alone editing, it slows my whole computer to a crawl. Delaying typing in web browser and super-jittery movement of windows.

Now, in Lightroom, everything is slow menu-wise when importing, changing preferences, whatever. But, as soon as I add more than one mask, the whole program stalls and barely functions. Now, from my understanding, this shouldn't be happening with the specs that I currently have.

LRC version 14.4

Windows 11 Pro

Intel(R) Core(TM) i7-10700KF CPU @ 3.80GHz

32.0 GB RAM

Nvidia RTX 3060 12gb

1 TB SSD with over 100 GB free

None of these resources are going above 75%, with most settling around 50% in task manager. What could be causing this app to make my computer so slow?

sys_info.txt

Windows

M

Mark CarlineCorrect answer

Participant

I just switched to a new PC and found Lightroom Classic was running *VERY* slow. Been trying to diagnose it for a while and then today just uninstalled Avast and, BOOM! Back to normal fast speed. I don't know why I didn't just use the Windows 11 anti virus as I have heard it's pretty good.

M

Mark CarlineCorrect answer

Participant

I just switched to a new PC and found Lightroom Classic was running *VERY* slow. Been trying to diagnose it for a while and then today just uninstalled Avast and, BOOM! Back to normal fast speed. I don't know why I didn't just use the Windows 11 anti virus as I have heard it's pretty good.

Translate

Claire H.

Community Manager

Thanks for confirming @Mark Carline that the solution worked for you. Glad it's running smoothly now! ^CH

Translate

H

hyphosAuthor

Participating Frequently

I just found the problem.

TLDR uninstall avast

The problem is, Avast would continuously scan and slow down the whole computer to a stall. This happened on another occasion where an unreasonable problem like this showed up, and all I had to do was disable Avast. So imo, uninstall Avast and just use the built-in Windows anti-virus, it's improved significantly and works fine now.

Translate

dj_paige

Legend

Can't you instruct Avast not to scan LrC catalog files and photos?

Translate

Ian Lyons

Community Expert

@hyphos

Check 'Catalog Settings' to see whether you have 'Automatically writes changes into XMP' enabled. If it's enabled, then disable (i.e. uncheck) to see whether the issue is resolved.

Translate

H

hyphosAuthor

Participating Frequently

Yeah thats always been off

Translate

dj_paige

Legend

While @DdeGannes may be on the right track, I would also recommend that you make sure your GPU driver is up to date, and make sure that it is a Studio driver and not a Game Ready driver.

Translate

H

hyphosAuthor

Participating Frequently

Yeah that was my first thought, I just updated to studio driver with a clean install and it didn't change much

Translate

DdeGannes

Community Expert

@hyphos , You indicate in your post "1 TB SSD with over 100 GB free".

This is what's responsible for the slow performance of your computer. It is recommended to maintain at least 20 to 25% of free disk space on your computer.

You presently nearly 10% available, your Operating System requires that for file swapping and the like.

Translate

Regards, Denis: Laptop Win 11, ver 24H2, LrC 15.4 PS 27.8;

H

hyphosAuthor

Participating Frequently

Would this change if I have all my raw files in a seperate ssd with ~50% free? Because right now my 1TB is system and I have a 500gb ssd with all the raw files on it which I reference and import into Lightroom from.

Translate

DdeGannes

Community Expert

Where is the Lightroom sub-folder which has the LrC catalog file with support data and preview files located?

Translate

Regards, Denis: Laptop Win 11, ver 24H2, LrC 15.4 PS 27.8;

Sign up

To post, reply, or follow discussions, please sign in with your Adobe ID.

Sign in to Adobe Community

To post, reply, or follow discussions, please sign in with your Adobe ID.