The aiming is the thing between PC and console, innit? That's why HZD (and RDR2) has that time-dilation aiming mechanic in the first place. Did they adjust the timing of RDR2 on the PC port? I feel like, with a mouse, you'd need, like, half the time you get in Dead Eye mode to make it work, and keep it challenging.
Acts 17:28 - "For in Him we live, and move, and have our being."