Unusually poor performance on Studio preview and test

[Kenth3132]

While in edit mode, playtests, or any other situation where a viewport of the game is being rendered, I experience an extremely poor performance in FPS. The exact behaviour is as if Studio’s FPS is locked to a value lower than 60, despite there being no third party FPS unlocker installed. The exact performance can change seemingly randomly on startup. In the example videos, it is at roughly 38 FPS, but I’ve also observed it at values both lower and higher than that, but never above or at 60. Sometimes, the performance between edit mode and playtests are different, sometimes they are the same. I have no reliable steps to reproduce this issue.

I’ve currently tried:
Disabling all plugins and beta features
Reinstalling Studio
Manually uninstalling all files related to Studio before a reinstall
Wiping registry entries related to Studio (Caused the FPS to change but did not fix the issue)
Resetting NVIDIA Control Panel to factory settings

System Information:
AMD Ryzen 7 3700X 8-Core Processor
32.0 GB of memory
NVIDIA GeForce RTX 2080

[Ax1sAng1e (Pastor James)]

Severe lag spikes when moving the mouse in Studio

I’m now experiencing this as well. I first noticed it happening while in Test mode and doing firstperson/shiftlock and then quickly looking around, but it doesn’t happen in thirdperson. It seems like it lags whenever the mouse is moving over the viewport as long as you aren’t clicking on anything. Very strange, and very aggravating.

It has to do with some widget panel causing lag spikes?

This does NOT happen with a gamepad,
Moving around with a gamepad is smooth and responsive, this seems like mouse input only issue.

[Kenth3132]

@Kenth3132

The exact behaviour is as if Studio’s FPS is locked to a value lower than 60, despite there being no third party FPS unlocker installed.

The issue does not manifest as lagspikes.

[butterthebig]

Hi, when did you first notice this behavior? Also, does the FPS change when you close all widgets and just display the play area?

[butterthebig]

Also, what is the FPS on a blank baseplate?

[Ax1sAng1e (Pastor James)]

I closed all my plugins, disabled them, no 3rd party software running.
Reproduction is easy, just play in 2 player mode or what ever mode creates a server and a client instance separately.

[Ax1sAng1e (Pastor James)]

stable 60 until any mouse input happens

[Kenth3132]

@butterthebig

when did you first notice this behavior?

About a month ago.

@butterthebig

does the FPS change when you close all widgets and just display the play area?

Yes. The FPS seems to return to normal when I do this.

@butterthebig

what is the FPS on a blank baseplate?

Blank baseplate seems to exhibit the exact same behavior as the test place in the videos. ~38 FPS with widgets and 60 without.

[Kenth3132]

Hello, are there any updates on this issue? The closing of widgets to return FPS was promising, but nothing more.

[Kenth3132]

After coming back to this system to see if things are still broken, they are not! Unfortunately I have no idea which update may have fixed things, but at this point I am just happy to mark this as fixed.