The only question is whether your home machine's bootup to desktop timing is normal for that level of hardware and age. I can't help you there.
But junoluna is right that the ahs iso is really not meant for old machines. It comes with a potentially too-new kernel that may no longer work well with old hardware. I'm not sure, but it's possible that some old drivers that work better with your old hardware may have phased out of the latest kernels as they add newer drivers?
And the ahs repo is enabled by default to install the latest graphics-related packages which you surely will not need. As that repo continues to roll updates, who knows if that will slow your machine even more.
Try downloading the standard non-ahs 19.1 iso and testing it live on your old machine. That will show you how kernel 4.19 runs on your home computer. If it runs better, good.
You might wish to wait for experts to see if you can revert to normal graphics-related packages without needing a reinstall of 19.1.
Certainly you can install an older but Long Term Support kernel like 4.19 or the antiX-4.9 on your current 19.1 installation and make that the default boot on your bootloader . But if you install older kernels but keep the ahs repo enabled, I'm not sure if that will mess anything up.
Wait for Stevo and more technical people to wake up and give their comments on this thread.
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Stevo wrote: