I am using 3.8 and copying products with many attributes and associated products takes a while. This would not be a problem in itself but it completely kills the performance of the front end as well whilst doing the copy.
I noticed that the worker process was taking the hit so my solution was simply to setup a new site in IIS just for doing these admin / large copy tasks. It works great with no performance hit on the front end.
I am using 3.8 and copying products with many attributes and associated products takes a while. This would not be a problem in itself but it completely kills the performance of the front end as well whilst doing the copy.
I noticed that the worker process was taking the hit so my solution was simply to setup a new site in IIS just for doing these admin / large copy tasks. It works great with no performance hit on the front end.
Do you have any kind of customization on your site?
Have you tried this on the latest version since latest version always have performance optimization.