Magic trackpad lost after sleep

I have an otherwise perfectly running intel based (coffeelake) Hack

• 2019 iMac
  MacOS Big Sur 11.6 (Has been this way all the way through all versions, prior to big sur I was using clover, and sleep didn't work at all)
• BCM94360CS2 based bluetooth/wifi PCI Card
• ASUS PRIME Z370-A motherboard
• I7 8700K CPU
• 16GB ram
• NVME SSD Samsung 970 EVO
• Internal UHD 630 Graphics
• USB are mapped
• Opencore Version - DBG-067-2021-03-01
  

Problem:

I also have a Magic Trackpad 2 which works perfectly after a boot, but will not reconnect after sleep. I can connect it via USB to lightning cable, and it will work, but even after this, if I disconnect the cable it won't re-connect wirelessly.

If I turn bluetooth off before sleep, and then turn it on after sleep, it will work.

Any ideas for fixes to try?

Thanks