If they are bigger than that, probably t most likely the horizontal ones are fine, just the verts. Plus you have gifs, moving parts probably take longer as well. For me the verticals have trouble loading onto the blockchain and fail half the time if I don't reduce. I'm no expert tho, just a few tweeks I had to make. This is a useful tool: https://www.reduceimages.com/final_image.php?image=b4d51e3e0d