Using four-finger gestures on laptop touchpad insta-crashes macOS

Hi all,

So I've got my laptop's Synaptics touchpad working well with my Hackintosh (barring some minor responsiveness issues when swiping my finger in rapid succession). All gestures up to three fingers work smoothly and without problem. However, as soon as my touchpad registers a fourth finger (whether by trying a four-finger gesture or by accidentally brushing the touchpad with my hand), the OS instantly crashes and the system reboots, ten times out of ten. Is this normal with Hackintosh or am I missing something? I had this issue with High Sierra and I still have it now after upgrading to Mojave. I have these relevant kexts in my EFI folder and in Library/Extensions:

USBPorts.kext (only in EFI)
VoodooI2C.kext
VoodooI2CHID.kext
VoodooPS2Controller.kext
VoodooI2CELAN.kext
VoodooI2CFTE.kext
VoodooI2CUPDDEngine.kext

Thanks very much for the help. I have a Tongfang GK5CN6Z laptop.