Hs 129 barely flyable

[RPS69]

Originally Posted by Rabb

Actually, no. Reducing prop pitch increases drag. At high speeds to be exact.

Increasing prop pitch at high (dive) speeds enables you to gain even more speed, but if you're not careful you can over-rev the engine and destroy it.

In game, you reduce percentage... to increase pitch. He is talking in game terms, you are talking in formal terms. But both are stating the same thing.
I don't know why IL2 implemented it that way, but it generates this kind of confussion.

Maybe the original intention was to reduce pitch effect, or increase it, not to actually reduce or increase blade pitch.