Can you please make sure to update to the most recent driver version again?
The driver showing in logfiles is 9.3. The newest can be downloaded here:
https://www.synaptics.com/products/d...c?filetype=exe
Also, if you have not done so already, I suggest turning the PCIe Link State Power Management and USB 3 Link Power Management advanced power settings to 'Off' for both AC and DC power in order to help rule those settings out as contributors to the current behavior.
Those settings may not be visible by default, so here are instructions for making the settings visible with the Windows Advanced Power Settings:
PCIe LSPM -->
https://www.tenforums.com/tutorials/...dows-10-a.html
USB 3 Link PM -->
https://www.tenforums.com/tutorials/...s-windows.html
Once the settings are visible, set both of them to 'Off' for both 'Plugged in' and 'On Battery' power states and then reboot the laptop and then test the behavior again.