I have a new laptop with a rtx 5090. Opening any GL context takes more than half a second. There's tons of things that can be optimized and are pretty far from web.
We can only hope that the company building the hardware on which this new age of AI is based on soon starts "vibe-optimising" their own driver stack.
You should profile that, it is probably hitting the registry, the disk and maybe the network.
Try turning off wifi and see if it improves.
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I assume you're running proprietary drivers? Because I've never experienced anything like that on mesa. Launching an app that opens a window with a gl or vk context is so fast on my almost 10 year old hardware that it's nearly imperceptible.