Looks like Qt client has a memory leak: I've kept it running on my notebook for 24+hrs and it consumed over 5Gb of RAM.
Can you confirm which OS you are using please?
Latest Ubuntu, built from git 97484ab7cc451f404becdca43ad9f84bf5d97f24
Thanks, thats easy for me to test. I've had the QT die for me on 16.04 Desktop but has so far been fine on 17.04
Will monitor RAM usage and see if I can replicate though.