I will rather ask ‘nature’ and the answer is: bigger the Reynolds number is, lower the CD. CL goes only a bit better with higher Reynolds number (or flow speed), but CD is strongly going down.
Here is the graph from XFoil related to NACA0012. 1M Reyn curve is the lowest one (at alpha 0). 50 k Reyn curve is the highest one. Look at alpha for 10 degrees:
Of course, drag from pressure will go up with the flow speed by known formula. It means also, that so called ‘viscous drag’ is negative and impacts on CD in a way which is not directly proportional to the flow speed.
Conclusion: we may need to subtract viscous force from pressure force (in all XYZ), otherwise we will not get those results.