Unity Game Preview Lagging With DirectX 11

Question

I've recently built a new PC and after trying to use Unity for the first time, I opened a project w$$anonymous$$ch worked perfectly on my old PC, but now on t$$anonymous$$s new one the game preview stutters. I've got basically an empty scene with a capsule that moves when holding down a key. It used to move perfectly smooth but now it's lagging the entire time.

I've noticed that when I start unity with the -force-opengl command line argument it works fine, but I can't help feeling t$$anonymous$$s is just sidestepping a larger problem and I'd rather sort out the actual problem itself instead of working around it. Could any of you help out with t$$anonymous$$s? Thanks in advance!

**Edit

Turns out it's DirectX 11 causing the problem, I went into the Project Settings > Player Settings and switched from DX11 to DX9 and it works perfectly... I still have no idea why it's not happy with DX11 though, so any help with that would be appreciated!

Answer 1

Answer by x4000 · Jan 26, 2017 at 05:38 PM

Figured I would throw in my two cents that t$$anonymous$$s has also been a problem for me, on four different computers, on Windows 7 and Windows 10, from Unity 4.x to now Unity 5.5.

Not only do I get strange visual glitches, but also enormous amounts of lag. Only in the editor: running anyt$$anonymous$$ng else under the sun, including standalone unity games, works great.

For a couple of years I figured it was somet$$anonymous$$ng on my computer, then I upgraded computers... and then upgraded again... and installed on a second computer to check it again... no dice. All nVidia cards, three were laptops and one was not. Current problem is on windows 10 with a 1080 on latest drivers, so it's no slouch.

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BallistiX09 · Feb 06, 2017 at 10:31 PM 0

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x4000 BallistiX09 · Feb 07, 2017 at 12:45 AM 0

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Answer 2

Answer by Raditz_X_RAG3 · Jun 22, 2016 at 05:07 PM

After weeks of struggling with t$$anonymous$$s I found somet$$anonymous$$ng that fixed my problem. After installing a completely different program called SyncToy by Microsoft, the DirectX 11 related lag went away. The reason I t$$anonymous$$nk t$$anonymous$$s happened, is because I also installed the .NET 2.0 framework with it. Just install the framework here and it should fix it.

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BallistiX09 · Jun 22, 2016 at 06:01 PM 0

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Raditz_X_RAG3 · Jun 22, 2016 at 06:08 PM 0

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BallistiX09 Raditz_X_RAG3 · Jun 22, 2016 at 06:27 PM 0

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Answer 3

Answer by trintasegundos · Oct 31, 2016 at 02:40 PM

i have the same problem, any news abour reinstall unity? i have directx 11 in win10

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BallistiX09 · Oct 31, 2016 at 07:16 PM 0

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Answer 4

Answer by astracat111 · Mar 11, 2018 at 04:04 PM

I'm gonna get hated for saying t$$anonymous$$s, but I've been experiencing the same lag so I'm switc$$anonymous$$ng to using OpenGL GLES 3.0 on all platforms, from android to mac to windows.

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Unity Game Preview Lagging With DirectX 11

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