Simlink causing stutters

Hi, For the last couple of days my SIM has been suffering from quite bad stutters which I’ve tracked down to simlink. I’ve tried all combinations (dx 12/12, hags on/off etc) but only suspending simlink stops the stutters.
Anyone else seeing this?

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Make sure you have the latest version of Simlink and aircraft/simulator

Cheers
Ian

Windows 11, msfs 2020,
Interestingly stutters only when using simlink on airport charts ie sids, apt, stars etc. Is fine when using vfr/ifr charts.