After re-srarting LR, I do not see a problem now.
Yesterday I experienced very slow response in handling keywords:
- Working on a single photo at a time
- Pasting 20-30 keywords
- Cut / paste / adding
LR was very slow, took a few seconds to display data, sorting and re-display the data.
Nothing else in LR or the PC seems than slow / busy.
I did yesterday the same keyword editing action that I do regularly.
I will try to do more tests
LR some time have performance issues that restart LR improve, but usually not with metadata.
After more test:
It not nearly as bad as it was the first time with 11.3.
There is defenitly some decrease in performance (pasting and editing keywords on a single photo), in many cases, but its still workable