Photoshop running so slow and saving large file size

[Garfield37489505azg6]

I'm using Photoshop on my Mac pro m2 512gb. My first project of using photoshop has been going well. But this time, whenever I drag thr image layers on top of each other and adjust the size, it shows up "transfrom process" for almost a minute. Same thing happened when I use "select object", it took me a few minutes to complete the operation. When I try to save the file, it al so took me 2-3 minutes and exported a huge size up to 17gb. I don't know what is the problem, can someone help me out please? Thank you in advance.

[jane-e]

@Garfield37489505azg6 

I've moved your post from Using the Community to the Photoshop forum for you.

Jane

[D Fosse]

Check your units of measurement. It sounds like you have inches instead of pixels, producing a massive document.