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Question by Erikelelf · Jun 27, 2019 at 06:43 PM · unity 5buildfpsperformanceoptimization

Updating Unity Caused Severe Drop in FPS

So I'm working on a simple 2D game. Everything was going fine, it was all running well. I would build the game and get good FPS despite my crappy computer. Recently, I decided to update to the latest version of Unity 2019 from Unity 5.6. Now, the game runs horribly despite little to no change to the game. I'm getting extremely low FPS and choppiness and I have no idea what's causing it. I've done quite a bit of optimisation but it hasn't changed it a bit. Anyone know what's wrong?

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avatar image akaBase · Jun 27, 2019 at 07:29 PM 0
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Have you had a look at the profiler? Windows -> Analysis -> Profiler

That will give you a better idea of whats going on than anything we could answer with, with so little information to go on.

avatar image Erikelelf akaBase · Jun 28, 2019 at 03:26 PM 0
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I've tried that. I severely doubt it has anything to do with my code or how I've setup my objects. I added literally two things before building it again after the update. I took those out and it's still super laggy and choppy despite the fact that it was fine before. I've spent like a week and half just going through my game and optimising absolutely everything(compressing audio, making gameobjects static, reducing collision boxes and rigidbodies e.t.c) but it's made no noticeable change whatsoever. I was getting 30-60 FPS. I downloaded Unity Hub and updated Unity and now I'm getting 15 FPS at best despite little to no changes.

avatar image akaBase Erikelelf · Jul 03, 2019 at 10:48 AM 0
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Check which Physics layers are colliding. you previous setup might not have been imported and extra collisions could be causing it.

avatar image TreyH · Jun 28, 2019 at 05:01 PM 0
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Are you working on a laptop by chance?

avatar image Erikelelf TreyH · Jun 28, 2019 at 06:22 PM 0
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Yeah. It's not very good admittedly, but I didn't have any problems with FPS before the update because it was a pretty simple game.

avatar image TreyH Erikelelf · Jun 28, 2019 at 06:31 PM 0
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Is it just the editor or the built version too? I've had issues in the past ranging from:

  • power supply being too weak

  • battery vs. plugged in

  • power settings saving energy over performance

  • nvidia drivers being out of date

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Answer by FedericoDeBona · Jun 28, 2019 at 08:29 PM

There is really a big gap between 5.6 and 2019. I can sugget you to go back to 5.6 and build the project with that version, than start working on new projects on the 2019 one.

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