hii CP_Yeo. I found the solution. in SO Windows 11… if you have 2 or more monitors… You need to select the monitor with minimun resolution. (( for example I have a laptop (1920x1080pixels ) and a second monitor (4k, 3840 x2160pixels)
you need to select in Configuration of windows 11:
System > Display , the monitor with lower resolution (in my case is the laptop screen (1920x1080).
With this I solved my problem of different sizes when doing print screen and that it stuck in figma with different sizes. I hope you can solve it.
Under View → Interface Scale, you might have your Figma UI set to a bigger size, which will also make your designs bigger! I just had this issue myself.