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+--- Thread: best local stack on mac right now on 5090 (/showthread.php?tid=260)
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best local stack on mac right now on 5090 - plainember52 - 09-14-2026
Thought I'd post a small recipe because a lot of threads ask similar things.
Just sharing a setup that ended up working reasonably well: DeepSeek, LM Studio, B200, with a lot of attention on continuous batching.
If someone wants the exact settings I can clean them up and post them.
I care more about stability than squeezing the last possible tokens/sec out of it.
Re: best local stack on mac right now on 5090 - dockridge - 09-14-2026
I think the bottleneck is somewhere else. I wouldn't optimize around that first. On my side the bigger swing came from the runtime and not the model.
Re: best local stack on mac right now on 5090 - sanescope - 09-14-2026
Interesting, I hadn't tried that. That matches what I saw on 5090. The biggest change for me was simplifying the stack instead of adding one more optimization layer.
Re: best local stack on mac right now on 5090 - dockridge - 09-14-2026
A couple things I'd check first. If you're on vLLM, I'd confirm the version first and then reduce variables until the behavior is obvious.
Re: best local stack on mac right now on 5090 - pixelcrate82 - 09-14-2026
Can you fill in a bit more context? Are you testing this on B200 or something else?
Re: best local stack on mac right now on 5090 - amberplane - 09-14-2026
Good point. That matches what I saw on A6000.
Re: best local stack on mac right now on 5090 - mlxgarden - 09-14-2026
That matches what I was seeing. I ended up in about the same place using TensorRT-LLM.
Re: best local stack on mac right now on 5090 - signalpeak - 09-14-2026
Did a small comparison this afternoon. I couldn't reproduce the slowdown until I pushed context much higher. The main thing that moved was latency, not quality.
Re: best local stack on mac right now on 5090 - plainember52 - 09-14-2026
Appreciate the detail. That matches what I saw on 5090. Worth rechecking your defaults though, because one bad assumption can make the rest of the thread look confusing.
Re: best local stack on mac right now on 5090 - cobalttinker - 09-14-2026
What worked for me was pretty simple. On B200, the easiest win is often to back off the aggressive settings and see whether the problem survives. A lot of these threads end up being one bad config plus a pile of conclusions drawn from it.