How to prevent I cpu usage with low performance. (Nitro AN515-51)

I'm getting decent frames but my laptop isn't rendering the amount of frames other benchmarks online, with my specs, have. When playing fortnite, on all epic, I get sudden fps drops, which may be natural im not sure. For example, if I look straight forward and do a quick 180 my fps drops to 20-30 then eventually rises to 55 (the average fps). The main problem is when I'm playing on all low settings, my fps is insufficient, 50-60 when gliding. The only time I get over 100 is when im looking straight up or down which results in 110 - 120 fps. I'm guessing that this may be a cause of a cpu bottleneck. Thebottlenecker.com/calculator, although, with my specs, states, "Average bottleneck percentage: 0.29%" I'm not really sure whats going on can someone help me.
I've compared my benchmarks to this video's,

https://www.youtube.com/watch?v=g6tuEWrcogM&t=, and my fps seems pretty inconsistent, although hes running 2 x 8GB ram. I dont thing dual channel would make this huge of a difference.
Specs:
Acer Nitro 5
i5-7300HQ
GTX 1050 ti
1 x 8GB DDR4 RAM
256 GB SSD