You might feel faster because of suspension losses. That's a fancy way of saying it feels faster to go the same speed when everything feels harsh and bumpy due to less cushion and a firmer tire casing at higher pressure.
Like on my road bike with 25mm tires. I feel like I'm going 21 mph - it feels like that speed to me. But then on my gravel bike with 42mm tires when I'm going 21 mph it feels slower, but I look down at my computer and am surprised at the speed.
Or you might not notice a difference at all.