Frame by frame animation, resolution and storage size

I'm working on a 2d frame by frame animated game. I read somewhere in the beginning of learning the ropes, that when it comes to resolution, the bigger the better! That resulted in me animating in photoshop in 8k resolution, which of course leads to massive file sizes. The frames are of course compressed in game, but I'm afraid I'm going about this all wrong and that it will cause major problems later on. Am I completely screwed or is this a legitimate way of doing a 2d game for pc?

 

That's pretty huge. Depending upon how detailed you want your art to be, settle upon an art style that looks good at maximum supported target resolution. I imagine that at most this is 4k on PC. (For many styles, 4k itself is unnecessary because the art will look indistinguishable if less). That doesn't mean that each frame of your character is 4k: an animated character might only appear at some distance, occupying a tiny portion of the screen, you might only need 256x256 for it to support 4k. If 256x256 does in fact look good, then produce the art at 512x512 or 1024x1024 so you can always bump it up just in case.

 

That's good advice, I'll have to downscale the art to 4k and see what happens