Did they nerf down the dirt roads?

I have noticed for the past 3 weeks that when I get on a dirt section of the map the speed drops dramatically. I can be at 145-155 watts and my speed on the dirt roads drops down to about 12 mph. The frustrating part is I have taken my watts up over 200 in those same sections and it doesn’t seem to increase the speed. Today I included Volcano Flat and after you come up from the 2 underwater bridges you have the dirt and the wood bridges until you go through the village. During this time it doesn’t seem to matter what my watts are there is no increase in speed. Any help is appreciated. Thanks

Lots of posts on this topic. Search for ‘rolling resistance’.