Still getting jittery movement.

[Matt [Linux]]

I loaded the demo Motion test, and its not very smooth at all.

I remember now that I had this issue some time last year on my gaming PC, it was the reason i stopped learning Godot.

But I completely forgot about it until I started a new project yesterday and I now have a new gaming laptop so thought it would be ok. I started noticing the jitter again, so loaded the Motion demo, and its still the same, exactly the same issues i had before.

I have tried disabling vsync and manually setting the fps to different values. But the FPS is always stable, but the movement is jittery anyway.

I have turned of Nvidia thread optimization like suggested on the bug site, but no use, didnt help at all.

So looking at the bugs listed online it seems this is an ongoing issue from around 2 years ago. Seems to be Windows based and only affects a minority of users.

Im trying it on my Linux laptop soon to see if I have issues on there. Its a real shame, as i have fallen in love with Godot :(

I have an Nvidia 960m laptop, all driver up to date.

[Mischief Aaron]

I've been trying to understand this issue myself. I am not affected, but I'm aware of others that are. Can you gives us more stats, such as your processor and exact version of Windows? You can also try from the same computer using Linux via USB and seeing if it works off that, for the sake of deduction.

[Matt [Linux]]

hey, ill have to try the Linux USB thing and get back to you, but here are my windows stats.

OS:
Windows 10 Pro(64 bit)
version: 1703
os build: 15063.296

CPU:
Intel Core i7-6700HQ CPU @ 2.60GHz

GPU:
NVIDIA GeForce GTX 960M



On another note, the Thread Optimisation option in NVidia driver DOES seem to help somewhat.

it doesnt completely fix the issue, but i can hide most of what is left of the jitter during animations, which isnt ideal but its something.

I am comparing this with LibGDX btw. I made a simple project in both platforms of a sprite moving and wrapping around the screen and compare how fluid the movement is, and LibGDX is perfectely smooth all the time for me.

ill get back to you about the Linux test ok :)

*edit*


I just booted Linux Mint from USB, installed Godot and tested the Motion Demo. Its was radically more smooth than on windows. one of the Animated cars was occasionally a bit jittery, but very rarely. the other three cars were smooth as butter.

[Mischief Aaron]

That's fascinating... changing the OS worked. Makes sense with the prevailing hypothesis though. That prevailing hypothesis is that the drivers are to blame. The ones used in Windows seem to have problems occassionally & I'm guessing the mobile line might have some battery preserving features as well. The creator claims that Godot is running to spec and rather the drivers are the ones creating special rules for drawing to the screen that Godot would have to adhere to, but he'd prefer not doing that.