I'm having a problem similar to this one where I can't save large matrix fields on my site. Large, in this case, is > 200 rows with 3 fields each where 2 of those are asset fields. EE/Matrix/Assets/Fieldpack are all up-to-date and I've increased max_input_vars to 1500, max_execution_time to 600 and memory_limit to 256; still no luck. I just get a blank screen, no error message, no error in logfile.
Should I just stop trying to use matrix for this and adopt a different design, or should this work?