2018 15" Dell XPS 15 9570 (GTX1050Ti) [8th,6C,H] + GTX 1080 Ti @ 32Gbps-TB3 (ASUS XG Station Pro) + Win10 1809 [itsage]
I have noticed the performance throttling as well in Unigine benchmarks. I just ordered some 3mm thick cooling pads to improve heat dissipation. I hope it works. I will post my findings here when I get down to testing !
I had resigned myself to accepting the performance loss (~25% is huge !), but such a simple solution got my hopes up ! 😀