I've noticed performance in 0xDBE is quite choppy on my Macbook. Scrolling is jerky and even when typing there is a noticable delay for letters to appear in some cases. This is using an early 2015 Macbook pro, so a reasonably powerful machine.
0xDBE version 143.1301.4
I pulled up top in a terminal, and I noticed that even waving the cursor over the 0xDBE window caused CPU usage of 0xDBE to jump. If the cursor is over a console it jumps to about 50%, but if it's over a results grid it jumps to around 100%