I bought the Arturia Synth package a few months ago. It's pretty great, in terms of capabilities and presets, but it will make your CPU work pretty hard. Constant 10% CPU usage of a 2.9 GHz 6-core Intel i9 for each running instance. If you have a lot of other processing going on, like for other tracks and mixing, the latency really adds up too damn quick. I'm still pushing the limits on what I can hope to do live. Trying to simplify how I mix, and conceding that there's no way to push everything through the mastering plug-in I have (iZotope's "Ozone") without slappin' on 150 ms of latency. I'm also learning to better use the native Ableton programs, since they're much more computationally efficient. I've learned that pretty much all of the limitation is on my end. Sky's the limit (Mr. Bill is awesome, btw).
You might know about this channel already, but LOOK MUM NO COMPUTER is one of my fave synth people.
And this guy's pretty cool, he's just up the road from me. I'm planning on visiting their store after things get back to normal.