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+--- Thread: DeepSeek V4.1 impressions (/showthread.php?tid=745)
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Re: DeepSeek V4.1 impressions - routecraft - 10-15-2026
subscribed, curious where this lands.
Re: DeepSeek V4.1 impressions - mangoquill - 10-15-2026
Good point. I ended up in about the same place using vLLM. Worth rechecking your defaults though, because one bad assumption can make the rest of the thread look confusing. I keep promising myself this is the last rebuild.
Re: DeepSeek V4.1 impressions - routecraft - 10-16-2026
What worked for me was pretty simple. On 4090, 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.
Re: DeepSeek V4.1 impressions - routearch - 10-19-2026
What worked for me was pretty simple. Start by verifying the driver/runtime combo, then test with a smaller prompt, then look at structured output. Once you know the plain path works, then add the faster path back in piece by piece.
Re: DeepSeek V4.1 impressions - routecraft - 10-19-2026
that fixed it for me too.