Hey @JelsinStibenSanchezA, expensive operations are documented here: https://developer.atlassian.com/cloud/jira/platform/jira-expressions/#expensive-operations
For fields like comments, attachments, worklogs — is the REST Search API (/rest/api/3/search/jql) the only supported path for bulk retrieval in a Forge context?
There are a few gotchas regarding the number of comments that gets returned using the search API. I recommend reading this changelog for more info: https://developer.atlassian.com/cloud/jira/platform/changelog/#CHANGE-2046
For comments, the only way to get more than 20 is by using the get comments endpoint: https://developer.atlassian.com/cloud/jira/platform/rest/v3/api-group-issue-comments/#api-rest-api-3-issue-issueidorkey-comment-get