Wireless latency after upgrading to ThinOS 9.1.6108

I am noticing significant latency on the wireless connection of devices that have been upgraded to the latest ThinOS release 9.1.6108.  At Dell support's suggestion the BIOS on these devices was also upgraded to the latest release but this did not make a difference.  After downgrading a few of the devices to 9.1.4234 with all the same policy settings applied, the issue completely goes away and the connection is very stable.  Seeing this on both 5070 and 5470 models. I cannot run 9.1.5067 because of an issue with that release where my devices cannot connect to the wireless because there is a comma in the passkey.   Anyone else noticing any issues like this?  I am considering rolling back due to reports from end users of freezing and pausing while typing within their VDI desktops.