Between the GP5000 with tube that you used to ride and the Vittoria Corsa Speed G+ 2.0 - tubeless you now ride, there isn't much difference in watts saved by rolling resistance to get you that 80 km but maybe just less than a minute quicker. And there are other variables that might take that time and more back from one ride to the next if you aren't assessing or controlling all the other factors.
Ride some 150 km rides and you'll see more benefits.
Last edited by Iride01; 01-19-21 at 05:53 PM.