Is it possible to cap FPS?

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#22

You can probably fix the speed issue by dividing it by the time passed using os.clock()

#23

I don’t want to be kicked just because I used an FPS unlocker, and maybe Roblox will use VSync in future instead of a 60 FPS cap, making this code kick everyone who has a monitor with a higher refresh rate.

3 Likes
#24

After a bit of research i found this script

local RunService = game:GetService("RunService")
local MaxFPS = 30
while true do
    local t0 = tick()
    RunService.RenderSteppedt:Wait()
    repeat until (t0 + 1/MaxFPS) < tick()
end

i didnt make it but it works just fine.
edit : just realized this was posted here before.

#25

My god this is horrible, the script activity is over 70% sometimes.

6 Likes
#27

Sorry I’m late:

Could you explain this? I don’t understand what tick() does, or why we set clock to tick() again?

#28

Returns how much time has elapsed, in seconds, since the UNIX epoch, on the current local session’s computer. The UNIX epoch is represented by the date January 1st, 1970.

1 Like
#29

for anyone looking for a better solution, this caps it at exactly the cap you put, even if they are using an fps unlocker or anything else it will still work

local fpsCap = 165
local clock = tick()

game:GetService("RunService").RenderStepped:Connect(function()
	while clock + 1 / fpsCap > tick() do end
	clock = tick()
	
	task.wait()
end)

image

9 Likes
#30

Try this:

local RunService = game:GetService("RunService")

local fps = 22
local FT = 1 / fps

RunService.RenderStepped:Connect(function()
	local sTime = tick()

	while tick() - sTime < FT do
		-- dont have to do anything here but u can if u want
	end
end)
#31

That will basically blow up their client as your creating a while loop every single frame and not including a wait

#32

Ran accross this a while back. Never had a need to really test it for a game.
You need to let it run for a bit and it seems to lower the FPS as stated in FPSCAP.

local FPSCAP = 30 --cap
local LOOPCount = 40 --finetune
local MLoopCount = 27 --finetune

local FPS = 0
local Broken = 0
local function DOLOOP()
	spawn(function()
		while true do
			game:GetService("RunService").Heartbeat:Wait()
			if FPS+5 < FPSCAP and Broken <= LOOPCount*MLoopCount then
				Broken += 1
				break
			end
		end
	end)
end

game:GetService("RunService").RenderStepped:Connect(function(delta)
	FPS = 1/delta
end)

spawn(function()
	while true do
		game:GetService("RunService").Heartbeat:Wait()
		if FPS >= FPSCAP then
			spawn(function()
				for i = 1, LOOPCount do
					DOLOOP()
				end
			end)
		end
	end
end)
spawn(function()
	while wait(1) do
		Broken = 0
	end
end)

You’ll have to test it yourself, it may not be the best way to go about this.

#33

getting the fps is more simpler than that code because RunService.RenderStepped returns the deltatime which is the time between the last frame and the present frame.
we can get the fps by getting the reciprocal of the deltatime.

local RunService = game:GetService("RunService")

RunService.RenderStepped:Connect(function(deltaTime)
    local fps = 1//deltaTime
    print(fps)
end)
1 Like
#34

Shouldn’t blow up the client. I also tried capping it to 1 FPS and tested it on a phone and it worked just fine.

#35

As long as you don’t cap it to 0 fps xD