I just noticed that if you use SDL_FLIP_HORIZONTAL ion RenderCopyEx on Android the whole
drawing process takes a lot of time.
If I then after that use this:
it is still slow. Just like if there is a memory leak or something.
I had to go back to a SDL2.0.9-version from 2018-10-31 to get it to be fast again.
I have tried the latest Mercurial version but that is also slow.
I have no issues with this on ios, macos , switch etc.
Is this a well known bug?