This is a longshot - is there anyway to detect poor vs strong graphics card performance via a JS plugin?

We have built a parallax site for a client, it stutters on lower performance machines - we could tweak the performance to make it work better across the board - but this of course reduces the experience for users with higher performance machines.

We could detect browser version also - but the same browser could run on low and high performance machines - so doesn't help our situation

Any ideas?

javascript jquery
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