Hi,
I've been having similar issues with my Tuf f15 - RTX 3070, I7.
For some reason most games let windows decide whether to use the CPU or GPU, however you can customise this which seemed to sort out a lot of my lag/frame issues.
If you go to the windows search bar and type in 'Graphics Settings' then choose 'Desktop App' or 'Microsoft Store' app to locate your chosen file i.e; Warzone.
Once you've selected the file.exe click options and change it to 'high performance' and that should force it to run off of your GPU.
Screenshot attached.