While we can’t always make Lightroom (or any program) as speedy as we want, there is one sure-fire way to make browsing your photos faster in Lightroom Classic CC. Using the embedded option while importing, along with browsing in Library mode will definitely speed up your photo selecting experience.
Link to Lightroom Speed Tip Video: https://youtu.be/iUvdGnp3tIs

I love teaching and photography... In that order. I feel that enjoying photography, and photo editing can get WAY too complicated. So my personal mission (and favorite thing to do), is to create education that simplifies the process of taking great photos, and how to edit them to get the results youโve always wanted.
Do you have to take RAW+jpeg on the camera or does it work with just RAW?
No. Just raw.
It’s a great tip. After an image has been manipulated in the Develop Module, views in the Library module will be of the updated image, not the embedded one – right?