My SVP’s nowadays are pretty big and loading the whole thing usually takes a while, however I would like it to do so without using almost all of my CPU (~90%) so I can still make edits in my DAW without incredibly choppy playback during that time.
You can reduce the number of rendering threads in the Settings panel.
「いいね！」 1
Thank you so much for the fast response Claire 
Splitting large SVPs into several smaller ones is another option, e.g. splitting a large verse track into verse 1, verse 2, etc.
Downside: You need to use the rendered tracks in your DAW or need several instances of SynthV on several tracks. The later might also introduce CPU stress.
In my current project I only have two instances of SynthV in Studio One, one for all verses and one for all choruses. But I use an iMac Pro, which has plenty of power.