Ryzen 9 7945hx Undervolting increased my performance during cinebench, but it didn't decrease my temps during gaming

I did undervolt my r9 7945hx, and it went pretty well my cinebench score increased from 32k to 34k and of course I used performance profile (at -18 core offset). I don't use performance mode for gaming because it's unnecessary (I have my own custom settings for particular games). The thing is my temps didn't decrease during gaming, any idea what might be the reason?

oh and I'm using an older version of uxtu since dragon range processors aren't supported in latest builds. My version is v1.1.0 Beta 5.