Will undervolting my 2080Ti help with my CPU bottleneck? i7-5820K

Currently, the CPU is overclocked to 4.5Ghz @ 1.28v running about 77c under load. I’ve tried disabling hyperthreading, lowering voltages of both CPU and GPU, changing resolution/game fidelity settings, adjusting monitor refresh rates, enabling GSync/vsync options etc.

agreed!!