Ay frustrating talaga ang matben system, lalo na pag rush ka pa! Based on sa experience ko at ng mga kaibigan ko, try submitting early in the morning like 6-7 AM or late evening around 9-10 PM when fewer people are using the system, mas mabilis kaya mag-load at less prone sa errors. One of my mum friends swears na mas okay mag-submit on weekdays (Tuesday to Thursday) rather than Mondays or Fridays, and parang true naman based sa aming experiences haha, parang mas maraming tao ang nag-access those days talaga!