Marko Bekhta ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=557058%... ) *commented* on HV-1933 ( https://hibernate.atlassian.net/browse/HV-1933?atlOrigin=eyJpIjoiMDRmMmY1... ) Re: Performance issue for validating list with 20k elements ( https://hibernate.atlassian.net/browse/HV-1933?atlOrigin=eyJpIjoiMDRmMmY1... ) hey, Anatoliy Balakirev ( https://hibernate.atlassian.net/secure/ViewProfile.jspa?accountId=5c62d60... ) thanks for reporting the issue and providing the code examples. Please see linked issues - https://hibernate.atlassian.net/browse/HV-1831 ( https://hibernate.atlassian.net/browse/HV-1831 ) and https://hibernate.atlassian.net/browse/HV-1928 ( https://hibernate.atlassian.net/browse/HV-1928 ) Looks like in your case you have a combination of both. You don’t really need to have @Valid unless you expect to do cascading validation (so places like private @Valid String currencyCode; shouldn’t use @Valid ). And well the fact that you have a huge list of objects for cascading degrades the performance ( https://hibernate.atlassian.net/browse/HV-1831 ( https://hibernate.atlassian.net/browse/HV-1831 ) should address that part) ( https://hibernate.atlassian.net/browse/HV-1933#add-comment?atlOrigin=eyJp... ) Add Comment ( https://hibernate.atlassian.net/browse/HV-1933#add-comment?atlOrigin=eyJp... ) Get Jira notifications on your phone! Download the Jira Cloud app for Android ( https://play.google.com/store/apps/details?id=com.atlassian.android.jira.... ) or iOS ( https://itunes.apple.com/app/apple-store/id1006972087?pt=696495&ct=Em... ) This message was sent by Atlassian Jira (v1001.0.0-SNAPSHOT#100213- sha1:cca7326 )