I'm going to attempt this on probably one of the most out-dated systems in this thread, the only part which meets the recommended requirements is my GTX 1070. The rest is... actually ten years old this year - I really should upgrade soon!
I won't lose much if I'm not happy with the performance because I've taken advantage of the 3 months for £1 deal and I'm sure I can find other games to try if FH5 doesn't run as well as I'd like. That means a wait until the 9th before I can play, but at least I can download it now at 100Mb/s which is the only other half decent thing connected to this PC.