a fast processor can keep a GPU busy even at 1080P, and, max settings cause varying amounts of usage depending on the game.
YOu can try lowering settings, shadows, any AA/AF filtering, etc., and see if FPS increase....if so, the GPU is your current limit.
As you have a base 10700 (vice a 10700K), I'd be curious to know what clock speeds are sustained under full load after 2-3 minutes...; ideally, with power limits removed, we'd like to see 'similar to 10700K behavior, with sustained 4.6-4.7 GHz boost clocks, even after several minutes. Using Intel defaults, it's possible the mainboard might clock down a non-K cpu to comply with TDP-objectives, and lower clock speed by several hundred MHz, to as low as 2.9-3.2 GHz. You can override the TDP limit and/or boost duration limits within Intel's XTU app easily enough if you see such behavior)