I made this game: https://tekkerskillet.itch.io/bonk-game

Some people are loading it up and finding random images like characters or the background to just be black boxes. This doesn't happen to everyone and is inconsistent between browsers. I can run it in any browser and other people have too, but it seems 50/50. Is there something I can do about this?

Small update: One person got it to stop showing black boxes by refreshing a lot and another can get it to do that the same way but it freezes