It’s a fucking computer, doesn’t mean it’s a common practice by developers to test out their games running many times simultaneously. That’s fucking ridiculous to expect. Some things are just common practice that it would be ridiculous to test for such edge cases.

If you overload your system with enough it will crash regardless. Running merely slow is definitely not a sign of optimization. Have you tried rendering out 3d models that are too big for your gpu/cpu? Definitely can crash not just the program but the whole system.

I routinely have 60+ tabs open. 300+ being actively worked on as op claims is nonsense.