This mod requires Fabric, not Forge. (FpsReducer (Forge) is similar.)
Dynamic FPS automatically reduces the speed at which minecraft renders when it's not focused (to 1 FPS) or hidden (no renders at all). It also fixes a bug in Vanilla Minecraft that makes it take much more performance in the background than it should, as well as making the game not render while reloading resources (which makes it take forever on my machine!).
Is it compatible with optifine?
snapshots of 1.17?
As far as I'm aware, 1.2.1 already supports those, though CurseForge doesn't let me mark it as such.
Hey! I'm using this mod and I'm not seeing any difference in FPS, just a visual change, not an actual change in Vanilla's FPS counter
https://media.discordapp.net/attachments/737778716465168455/778723735573233744/unknown.png
As you can see above, I'm not focusing on the game window yet the FPS counter isn't changed, is there any explanation for this?
My CPU and Ram usage aren't going any lower too, so I assume the mod isn't working for me.
It's a bit confusing: The part of the code that calculates FPS still runs, it's just that the actual game render is cancelled and throttled (to idle for 30ms) by Dynamic FPS. So it looks like it's rendering at about 33 FPS despite only doing 1 FPS' worth of rendering work. The visual change is exactly what matters here, not the FPS counter (though I suppose I could change the mod to affect that too—it used to, but it doesn't anymore due to vanilla changes).
As for CPU/RAM usage, it doesn't really affect RAM, since all that stuff still needs to be loaded in order to render once a second—unless the window is completely hidden from view (the definition of which might depend on your system), at which point it doesn't render at all and thus the RAM can be swapped to disk. Additionally, in your screenshot, you aren't pausing the game, so it still has to run tick logic, which can make up a lot of the CPU's work, especially when you have a lot of mods and complex blocks/entities around.
In reply to juliand665:
Hey! well, about the FPS, I understand, about CPU usage, even when paused nothing happens, I tried making the game stop rendering when unfocused(by adding "if (!client.isWindowFocused()) info.cancel();" to the GameRender class) and that actually makes my CPU usage lower (and sometimes ram but idfk why ram happens), I'm really confused about my case tbh...
That's very strange indeed. If you have a dev environment set up, you could play around with the time between renders or the idle time the mod inserts when skipping frames. That would be very helpful to diagnose this issue. I'd also really appreciate if you could post this issue and any findings you make on our GitHub Issue Tracker (also linked at the top) instead; CF comments are kind of annoying :)
In reply to juliand665:
i'll do it when I have time (aka. when I stop being lazy)
Hehe, sounds good :p
I get that
The version for 1.16.4 works in 1.16.3?
Sure does! I added 1.16.4 to the supported versions a while back.
Is there a config or something so I can change what it limits the fps to?
No, and for a relatively good reason at that. What would you like a higher background FPS for?
In reply to juliand665:
When I alt tab out of MC I can still usually see at least a bit of it in the background and it's just a bit rough on the eyes.
I honestly don’t think that’d improve much with anything under like 15 fps, at which point you’re giving up a lot of performance for it. At least this was it looks intentional rather than like your system is lagging out, lol. You may want to consider minimizing it instead, causing it to not render at all (afaik), further minimizing performance impact.
That's a fair point, but the option to config it would be nice. I've started using sticky notes on Win10 a lot recently and they let me type in them while hovering over items and what-not in MC so the 1fps makes that a bit tedious but it's tolerable. Great mod overall though, especially for when I'm running multiple instances ^^
Huh, I'm surprised it can somehow absorb key inputs but still relay mouse input, while simultaneously making the mc window unfocused/inactive (at least in the way my mod checks). Ideally, it wouldn't throttle at all in that scenario, but I doubt that's achievable in general. I guess a config option really would be for the best.
Yeah, it's a weird little interaction but it's existence is useful
I wish there was a version for 1.8.9
I use VSync for smooth gameplay, but when I run Minecraft in the background it can't adjust to monitor Hz, so it goes up to like 600fps
As far as I'm aware, Fabric doesn't even exist for 1.8.9, sorry.