P: High CPU usage makes it unusable during export

[FeedbackCommunityMember]

After latest Lightroom Classic CC I almost can't work in Lightroom during export as it's using around 90% off mu CPU. Maybe exporting itself is a bit faster but when exporting 2000 pics I'm unable to work for about half an hour as there are huge lags. In the end I would rather prefer slower export working in a background and still have ability to work with pics without such noticable slow down. It was much better balanced before updating to Classic CC.
My CPU: Intel Core i7-6700K (4 cores, od 4.00 GHz do 4.20 GHz, 8 MB cache)

[David23026570qggd]

Just updated to 11.2, can confirm nothing has changed as far as the behavior I'm observing. Still steps on other processes as soon as it starts the full Photo Merge task.

[johnrellis]

Any improvement in exporting?

[David23026570qggd]

I almost thought so, before I remembered I was running on 6 cores. Relaunching default shows no improvement on export or on import (noticed it on import after my first post).

[chud98250142]

This is really ridiculous 

Plz add the feature to not using 100% cpu on export.

We still need to do otherthing while LR export.

[johnrellis]

@chud98250142, are you on Windows or Mac?

[chud98250142]

im using both,

with windows im using bat file to using only 6core of 8core i9 9900k

but with mac im leaving macbook i7 2018 while export 

that my solution right now.

[defaultrk0b8rjm72mq]

Same thing happens to me when trying to export out of LrC, even a few images causes LrC to close suddenly. Not sure what to do other than report so Adobe can take action.