Linux Ubuntu 19.10 offers improved performance as shared in this review

The first reason I like 19.10 so much is that it feels insanely fast. Everyday tasks like opening applications, dragging windows, activating the search interface, and even just moving the cursor around are all noticeably faster than in 19.04. The speed boost is immediately noticeable from the minute you pop in the live CD, and it’s even faster once you have 19.10 installed.

Most improvements in 19.10 can be attributed to the latest release of GNOME 3.34, the default desktop for Ubuntu. However, GNOME 3.34 is faster largely because of work Canonical engineers put in.