Using a 16gb machine?

Ok guys I’ve got a map that’s got some HD elements in it like a hdri skysphere and a lot of triggers (350 odd).

now I’ve recently added a switch on int node, but everytime I add an output to the node it takes like 15 seconds!

If I try and delete a node or add for instance a trigger it takes a similar amount of time.

I’m running a decent machine i7 7700k, gtx 1080 with 16gb of ram, is the memory causing the slow down or could it be something else and how can I get around this?

Would appreciate some advice.