A330-900neo: Realistic climb for weight?

Hi all.
Quick question i was doing a long haul last night i was weighing 400,000 lb fuel payload etc.I was wondering if it was realistic it was climbing at 400 fpm and stopped at 280 if so fine but if not anyone know what could of caused it

Hi, did you check if your TOW was below the MTOW? May be your ZFW at departure was too high and you were overloaded

I retried after the problematic flight on 20 percent fuel no payload and still didn’t work think the plane has been updated now so when I next fly the a330 I will report back