Unity FPS slowdowns

[CryonicSuspension]

I've noticed ever since "Cliff Empire" in 2001 that the more graphical action that is happening ( the more units, the more bullets that are firing, screen animations etc. ), the more my frame rate slows.

In Mechabellum, my frame rate gets as low as 17 FPS, until it gets to the point where it sometimes just stutters ( like it pauses a second and skips frames, frame rate chop ).

The game is playable it's just... more of an annoyance. I always assumed that it's "just a Unity thing", but after doing a Google search, it might be an interaction between Unity and my specific high-end hardware ( my hardware specs are listed at the bottom of the review ).

I was wondering if anyone had any insight?

https://steamcommunity.com/id/CryonicSuspension/recommended/809140?snr=1_5_9__402