Premiere Beta 26.5 color mode EXTREMELY SLOW

I have been editing my projects with the official release (26.3) and opening them on Premiere Beta to do the color grade using the new Color mode (saving the project with a new name so I can still open the ungraded project on the official release if something happens). The color mode recently became unusable. It is very very very slow. Every click on a tool takes seconds to open the scope and then it takes a few seconds to show any change when I move the mouse. I noticed I was using the 26.5 version. I tried for hours but got very frustrated and installed the previous beta version (26.3) and I’m once again able to grade my footage. It’s slow but workable. 

I don’t know what happened with the 26.5 version but I hope it gets fixed so I can use the latest version.