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Thanks for the suggestions. It was not a DNS issue, but it got me started digging into the settings. I turned off all the MAC and name resolution options and was still having the issue. Finally, I created a new profile and the issue went away. By exporting my old and new profiles and comparing them, I found the problem. A while back I was experimenting with decrypting some HTTPS traffic and has set the Windows environment variable for SSLKEYLOGFILE and added a Wireshark option to the TLS protocol for (Pre)-Master-Secret log file. My SSL log file had grown to over 800MB. So when I would start a capture, as soon as it caught a TLS packet, the GUI would freeze while the log file was accessed. I was wondering why there was a variable length of time before it froze, but after this discovery, I found it was always freezing on the first TLS packet.