Unknown Developer; It is hardly irrelevant. Doom 2016, is a finished product, that got heavily optimized during it's beta phase, which is where most games get optimization passes. This game, if you can call it a game (more simulator atm), is in pre-alpha. A lack of good performance is to be expected. The focus has been to get in more content, which is what people are paying them for on Patreon... and likely have the rigs to handle the game. We are non-paying "guests" of the game, and so, optimization hasn't been a priority. They have made some improvements on the whole optimization and performance, but the right now it isn't a priority compared to more of this and that.
Instead of bitching about the game here, how about you send feedback to their email address. Sometimes they visit the forums, but if you really want the game to improve, do like what I do, and send them feedback and suggestions to their email address.
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On a side note, this forum's search function really could use some work. I've had numerous problems with it, and often have to use google with f95zone to find the game on f95zone. ie Accidental Woman. Its here on f95zone, but good luck finding it by searching for it.