4.19 hitching and stuttering fix

Development Programming & Scripting C++
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1

Hello,

This is a known issue and it is really serious for us. Does anyone have a fix for this or know how to get rid of the stuttering / hitching with 4.19 in the editor and in shipping builds? We can’t release our game in this state and we are really concerned. Going back to 4.18 will undo a large amount of items and we will miss our release window.

Thanks for any help with this.

2

Sadly, I haven’t been able to pinpoint the change, that introduced it. Can’t afford investing more time into search and would join in welcoming a pointer to the cause.

3

Yes. Turning off frame rate smoothing fixed it for us.

Engine >> General Settings >> Smooth Frame Rate (false)

Noticed that:

  • it only happens on some systems (happened on an ATI test system for us)
  • googling around it is theorized to be a conflict between FPS smoothing and VSync
4

Where excactley do you turn off frame smoothing

5

Go to Project Settings, type in the top search field “Framerate” and the setting will be listed (default is checked).

6

I believe I’m having this issue under extremely specific situations with 4.24 of unreal. Mostly when I have 10k to 300k HISM’s going on I get a small hitch every 30-60 seconds. I’ll report back if the smoothing is causing the issue since I do have it enabled.

7

Same problem here,re installed the engine,but problems occurred on 4.24 and 4.25