Resource block latency impact

Resource block is 180khz with subcarrier spacing of 15khz whereas it is 360khz with 30khz subcarrier spacing.
How this thing impact on the improved latency level? How the tcp/ip packets gets effected due to this so we get reduced latency.

In ofdm, the symbol duration = 1/subcarrier spacing.
Increasing SCS decreases symbol duration and hence slot duration and latency improves (given all other factors are fixed)