I found this thread on their forum and really downloaded his builds and tried. It's really a real speed up compared to official builds of Pale Moon.
https://forum.palemoon.org/viewtopic.php?f=40&p=224015&sid=805851ef52ea9f568ddb921abbf461a0#p224015
I wanted to send feed back to him but my account was banned. So I tried to register on the Pale Moon forum using my AOL email address and ironically the forum said dispossible email address not supported. This mean they consider AOL to be a dispossible email service. Then I gave up.