Hey guys it has been almost a quarter Year since i asked. I think the question if the game gets unplayable slow with the mod installed is really important for all who play or develop it. For me i have REALLY low FPS and need to watch what mods do.

Honestly, it probably depends on how you use the mod, and what other mods you have installed. Basically, you would need to try it out to see. I see the accusation of 'It slows the game down' thrown at too many mods, with too little evidence and testing to back it up, to take it too seriously.

I've been using Rimworld of Magic in every colony I play for several years, and while there may be some performance impact, I consider this mod well worth it.

Incidentally, have you tried out the various performance-improving mods? I'm seeing fairly good results with Rocketman, and there are others that may speed up the game for you.

I tried rocketman, the guys who made it also made the performance analyser and the above mentioned list.

Mod: A RimWorld of Magic, Severity of performance impact 3 of 3, "The Patch Pawn_Gizmo_TogglePatch, Postfix Pawn_DraftController_GetGizmos and Prefix DrawMesh_Cloaks run extremely high causing noticable performance drops while using the mod, Cat Eye Pendant rapes GlowGrid up to 20-40 ms constant "


My question is has the mod really such a high performance impact and is it optimized?
As i said i have really performance problems and try to find the culprint.

Yes, I noticed that list, quite a while ago. If the information was ever accurate to begin with, it's likely out of date now. I just gave a Cat Eye Pendant to all 41 pawns at my main colony, and glowgrid is running at around 5 ms, up from 2 ms without the pendants. Given that you'll seldom even have a Cat Eye Pendant, I'd call it a non-issue. Similarly, the patches mentioned only apply to pawns with classes from this mod, and are not likely to impact a normal colony.

Optimization is something that is never really 'done', but you do hit diminishing returns. I'd say this mod is reasonably optimized for it's scale and the number of different functions it has.

Now, how much of this applies to your hardware, software, mod list, and playstyle is something that only you can test. Dub's Performance Analyzer may take a little time to get used to, but it should be able to pinpoint mods you use that are taking up excessive resources, if there are any.