I currently have 3200 MHZ CL16

Would I see 10-20% fps increase if I upgrade to 4000MHZ CL18?

I know my ram is definitely bottlenecking because on an extremely cpu and ram intensive game I get 90 fps on 3200 mhz but when I push it to 3600 MHZ I get 120 fps

I’m just wondering with the shitter timings of a CL18 would I see a significant difference between 4000mhz cl18 and 3600mhz c16 the way I do when I over clock my 3200 to 3600

If that makes sense.