Maximise/boost pc performance

Hi i need urgent help. i have made a file which is around 300 mb but its really difficult to move around the model. In total i have 47513 block instances,7970 surfaces,3760 surfaces and 5088 meshes. I know its a lot but i have good pc graphics and cpu (ryzen 9 and supermax 2070) which arent really being used to full potential as you can see in the image here. Is there a way to maximise the performance or some other tips to fasten the process. Thanks in advance!! upload://oX6oRqiV7Pdr0khjnYQg407yKMP.png