Ram usage continue to rise until crash

Development Cinematics & Media
1

hi, im currently doing sometime with sequencer in UE5, i noticed that my ram will keep going up and will never drop.

for e.g. the session start with maybe around 15 gb used, then after maybe 15 minutes of working in sequencer, the ram go to the max of 32 gb and eventually it will crash.

anyone know what is causing this? thanks in advance.

edit:
things i noticed:

  1. the ram will drop after i leave UE5 idle for a while.
  2. just by pulling the yellow play indicator from left to right, will greatly increase the ram usage.