Hey Logithx,
As you mentioned, depending on the GPU you are using and your system specifications, the High Resolution Screenshot is known to cause crashes and will definitely be unstable when using really large multipliers. The documentation has a small warning about this as well so users know they are dealing with a tool that is not completely stable at the moment.
High Resolution Screenshot
With that being said, I also tested what you are reporting and was not experiencing the same crash. I used the console command ‘HighResShot 2’ and when that completed, immediately used the ‘Take a Screenshot’ button within the High Resolution Screenshot Tool. I then navigated to my ‘Saved’ folder within the specific project and had the two high resolution shots saved as images within that folder.
If my steps or process differ from yours, please let me know what I need to do in order to reproduce the issue you are reporting. Since the high res shot is dependent on your GPU, would you mind providing me with your dxdiag as well?
Thank you,