I’ve had a look at the logs you sent me and it seems like you have a I/O performance issue. Could you please describe the hardware you’re using and if you’re relying on any sort of virtualization technology? I’m not sure if it matters but could you perhaps disable security software that might be intercepting I/O calls, possibly causing requests to time out?
I am assuming here that you are connecting to the device directly via USB instead of relying on a USB-UART bridge, please let me know if this is not the case.
If you are using USB hubs, consider connecting directly to a root port instead and see if it helps.
Also, this is new:
You did not mention it crashing. We did not encounter such issues before. Am I correct in my assumption that by “crashing” you mean the software is unable to connect instead of an actual abnormal termination? If not, please send the logs where the crash occurred.