Any way for RPCS3 to create new log files instead of overwriting old ones?

If you're on Windows, you can use a small .bat script that:

- moves the current logs outside the directory to a backup directory
- runs rpcs3.exe

And then execute it every time you run rpcs3 instead of directly running the executable

Something like

You just have to change the directory to be rpcs3, the log file name to rpcs3.log or rpcs3.log.gz (optionally add another move command for the tty.log) and then after the move command just add a new line containing "rpcs3.exe" (without the quotes)

Then save as scriptname.bat and run it