I installed ToneX CS this morning, and my laptop/interface seem to hate it right away. It was laggy AF.
De-installed...
Details:
Win 8.1 Acer laptop from 2014
16 GB RAM
1 TB + 128 GB SSD
Intel i5-4210U 1.7 GHz
GeForce 840M 2 GB
Focusrite Scarlett 2i4
The (old) Cubase 5 and Helix Native both run smoothly, without any hassle whatsoever.
I tried tweaking both the interface settings and ToneX, but nope! Even the ToneX UI kept dragging behind every move (like 3-4 seconds after I click something).
Really weird. Tbh, I don't feel like going through that again. Might give it another try in a couple years, when I'll eventually buy a new laptop.