Qualcomm has commissioned a Signals Research Group (SRG) study of 5G performance, efficiency and general UX in those countries and cities to which the new radio bands have been rolled out. It reportedly found that 5G can achieve up to 10X performance compared to 4G/LTE. In addition, it is also capable of 5 times the download speeds than the older standard.
https://www.notebookcheck.net/Qualcomm-claims-that-a-new-study-proves-the-benefits-of-5G-over-4G-thus-far-in-2019.440229.0.html