Hello, just thank the help of the forum partners. The problem was that instead of compiling it in visual studio as (-release-) I did it in mode (-debug-). Now it only takes 8 seconds with my old cpu. I'm a novice in this, I'm from the time of the msx, zx spectrum, amstrad, comodore ... Thanks and best regards.

Yeah, with contemporary C and C++ compilers, the performance of a debug and a release build may differ greatly. And I, and many people here used Allegro from the DOS days onwards. Things have gotten more complicated, but Allegro5 does its best to wrap most of it in a friendly, easy to use API. So no worries, I think you'll get the hang of it step by step.

Uhm, no, that's bonkers. Talkin willy wonka here. Turning optimizations off and enabling debugging should make it take longer to run, not less time.

Personally I wouldn't consider this solved.

EDIT
Oh, I see. It was slow because it was debug mode. English can be confusing, especially when you don't like to read.

I suppose it is a combination of factors, slow cpu, debug mode, big photo .. and apologies for the translation. Thanks to all for the help