Image improvements for Tiles etc#841

I have noticed that the TTS gets very slow when you upload fullsized images for tokens, tiles etc.
It is nice to have high quality images to zoom into but they can really slow down the system.

what image sizes are you uploading? is it exclusive to Tiles that cause the slowdown or whenever you use an image this large?

I have a board which is made up of tiles. The are 3 by 5 tiles on the table making up the board. Each tile about 1200x1540 pixels and from 4mb to 100kb in size. The tiles are changed quite often and hence have to be uploaded or the image shifted up/down/left or right as is needed by the game. If I knew what was the optim pixel count for the displayed tile I could resize the images, or the images could be resized by TTS before being send to each player.

here is an example image and picture of the board. each tile is from the transform tool x:3.97, z:1, y:3.97 is there another way to measure it? measure meant tool say it is 32cm, or 17 grid, grid is set one to one.