Redfin eng, why is Redfin so slow and buggy?

I have a newer MacBook Pro, so you'd think it should perform well.

Half the time I use the site the website lags so much I have to refresh the page.
The other half of the time I get weird bugs. For example, can't scroll through listings, or the map sticks to my mouse movement if the mouse isn't clicking the map. The only way to fix is refresh the page and get back to where I was before.

Guys is there no focus on bug fixing on the front-end side of things? It's so frustrating to use Redfin. Too bad there is no better alternative right now.