Mudi GL-E750 Tethering

Hey, has anyone noticed any instability of tethering connection with the new firmware version 3.216?
Ever since I updated my firmware, when I use usb tethering, the device freezes at random intervals (between few minutes to ten minutes max). DNS lookup won’t work and I have to reboot, reconnect the device to get it back. And only after few minutes, it happens again.

Does the previous version 3.215 work smoothly?
You are tethering to an iPhone or Android?