Is there a way to do this?

To call some function what will return a DOSBox specific information from what it can be known if my game is running under DOSBox - for example to then not bother with long messy hardware detections but try the usual setup offered by DOSBox at first, or to not start tweaking the VGA to 100Hz :p (This last is possible! 🤣 ).

So some interrupt call what will return a string containing "DOSBox" or something similar what can be used to determine this in the background.

(On the other hand i think i know a method... Check how many of a "light" ASM command can be executed, and then check how many of a "heavy" one in one tick or some other time period. If they are near to each other then it is DOSBox, if they are far, then the CPU did it)