Troubleshooting over the years:
AX 2009: Did you delete your AUC files?
AX 2012: Is your CIL box checked?
D365: Are you a call center user?
Every version: Did you clear usage data?
I asked chatGPT to optimize a SQL query (replace subqueries with joins) and it went from returning 100 rows to over 50,000. I guess that's considered a feature in a way