Monitor it with Afterburner or HWInfo. If you look, then it means the game is paused or not utilising the CPU at that very moment.I would be stunned if you only got 40% CPU usage with that card, unless your GPU usage was very low, at say 20%. 8gb of RAM would only be used if the card is pushed relatively hard, but yes that could cause bottleneck too.
I realise nobody likes hearing this about their system.
no, it's alright you are probably right, im not very up there with computer knowledge and i did not take into consideration stuff like bottlenecking when i was purchasing my set-up, i will run after burner and see what it says, thanks