mirek wrote on Thu, 06 December 2018 19:46

A the moment, it seemed like a good solution to use what C++ lib provides.

I strongly disagree.

My proposition is to use steady_clock for msecs instead:

int msecs(int prev)
{
	auto p2 = std::chrono::steady_clock::now();
	return (int)std::chrono::duration_cast<std::chrono::milliseconds>(p2.time_since_epoch()).count() - prev;
}