Can anyone help me understand where the bottleneck in performance is? I just upgraded my CPU from a i7-6000k to a Ryzen 7 5800x, and the graphics card from a gtx1070 to a rtx3080.
In most cases, the performance is the same, or simply worse.
Here are a few screenshots from my game running in the editor, with the game window maximized:
Previously I had 80-90fps, often more.
Windows shows that my GPU isn’t even at 20%. It’s fans are not even running. Is this suggesting a CPU bottleneck? Read on!
The CPU doesn’t really go over 20%. I have 8 cores, how many does Unity use?
I am not an expert on the profiler, but this looks normal?
Is my game actually doing anything at all?
To be honest, after upgrading the hardware I expected to see much higher frame rates, but its simply MEH, and sometimes worse than previous. I don’t see anything here that explains why its not running way faster… do I have the handbrake on somewhere? Regular games are showing a massive improvement. It’s just Unity which isnt doing anything.
CPU load is 13 ms that’s pretty high. Assuming you did not write any multithreaded code your game seems CPU bound on a single thread. And single thread performance of CPUs in the past 10 years has barely increased. At the same time the single thread performance of Intel chips used-to-be better so the jump from a not-too-old Intel to a modern Ryzen may not be as huge as you’d expect - single-threading wise.
Just to be sure it’s just your game it would help to run system benchmarks, ideally some whose results you know and can compare to your old machine. I always test my old machine before upgrading to see how much of an effect I got after upgrading and whether anything seems off and needs tweaking (ie BIOS settings).
But where can I see the actual load on a CPU core? 20% isn’t 1/8 of 100%, which is what i’d expect… My old processor would max out on 25% which is one of the four cores running flat out. That doesnt seem to be the case here.
Also, with numbers like this, does it indicate i can add tons of geometry and maybe reflections and lights without impacting the frame rate?
Do you have Scene and Game view side-by-side (both visible)? If so that usually doubles the rendering load and would explain the 20%.
I believe the game window was free floating and maximized, with the scene view open behind it. So yeah, might be something like that.
In your screenshot, rendering editor alone takes 5 out of 12 ms per frame. I suggest you profile the build instead, that way the editor doesn’t interfere.
I have not learned how to do that yet, but i will look into it, thanks.
Unfortunately there’s something causing my build to run really slow, i suspect maybe some paths are incorrect and causing exceptions. Will reply soon 
Aha, I found some issues in my build which were slowing it down.
Without the errors, the build is running super nice!! I am very happy now.
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