Plasma leaking memory and refusing to start applications

I’m running the latest version of Plasma (Wayland) on a Lenovo ThinkPad X220 Tablet and it often has memory leaks forcing me to force quit it, also whenever I start an app from the task manager or the kickoff menu it gives me an error about forking (memory allocation) even though there is plenty of RAM free. This has been happening also on the previous release of Plasma.