As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FMC IS VERY, VERY SLOW WHEN ENTERING DATA. THERE IS A SEVERAL SECOND DELAY BEFORE THE EXECUTE LIGHT ILLUMINATES. MUCH SLOWER THAN NORMAL. ACFT GROUNDED. PERFORMED BOTH FMC, OPS CHECKS IN REF AMM 34-61-00-710-801. OPS CHECK NORMAL. NO HISTORY FOR LAST 30 DAYS.