You are not alone! I have pretty much the same problems here. One site I like for sat imagery is the GOES pages. https://www.star.nesdis.noaa.gov/GOES/conus.php?sat=G16
Also for radar "big pic" I use the NWS large composite full res loop. https://radar.weather.gov/Conus/full.php (edit..HAHA just saw thats the one u linked! sorry)
For in close radar with lightning and a host of other goodies.....I go to the phone and Radar Scope pro (paid) its worth it. Surprised there are not some better "working" weather pages out there!