Going backwards

I know it's beta and we're Guinea pigs... But this software has been tested and dropped on the S21 range... But I thought each beta version should improve and iron out any issues from previous beta version.... But.. And its a big but.... Seriously beta 2 is horrendous so laggy. Don't know what you've done but please undo as my phone is often unusable. And looking at feedback I'm not the only one... Not quite sure why we're having these issues as we are not the flagship phones but please hurry to issue beta 3. Thanks rant over