I am running a couple mods (including GraphicsLib) and I had no significant performance issues overall.
However, I recently decided that I want to bring my glorious space fleet battles to the next level and so I increased the maximum battle size from 500 to 800. This didn't choke the game outright during full-sized battles but I have noticed FPS issues - the game's engine visibly, though not significantly, "slows down" during battles, explicitly so when I launch a lot of missiles.
Now, I understand I may have pushed it too hard and the game's default battle size is locked to 500 for a reason. I do, however, have a relatively strong PC and GPU, which is why I am trying to figure out if there is a way to squeeze out superior performance and allow me to use the large battle size without compromising FPS.
I have tried the following to no noticeable effects:
-turning off V-Sync and/or G-sync via NVidia's control panel (V-sync for the program, G-sync globally)
-tweaking GraphicsLib settings (most notably turning off post processing and bloom)
-disabling GraphicsLib functionality altogether through "enableShaders":false in its settings
Since none of the above solutions have done anything to improve performance during large scale combat (only decreasing battle size works) I am wondering if the performance issue is related to graphics instead of something else (like processing all the entities on the map during combat - I have mentioned spawning missiles makes the performance drop noticeable).
I have also allocated extra RAM to the game via settings already (to 4056).
Here are my specs:
Processor: AMD Ryzen 5 2600X Six-Core Processor
Video Card: NVIDIA GeForce GTX 1080
RAM: 16 GB