Frozen Helix in Network with MegaLive?

My Setup,Port switch with Helix12 G4N and Helix 12 G2N at Bow, Helix 10 G4N at Console with ML also in Network. Both the G4N s and the ML have newest update and been fishing about 6 times with this setup and everything Clear and working great. Yesterday had a buddy in the back watching ML on the Console unit and he wanted to see Persistence Mode so I turned it on. After about 5 minutes the Helix 12 G4N in ML view locked up but the Console unit did not. I could do nothing with the 12 up at the Bow but after about minute it unfrozen I turned Persistence Off and it didn't lock up again. I checked all cable connection at the Bow Helix and the Switch and everything was tight. Now it could be the Helix Ethernet cable getting iffy but I have had the Network setup like this since I first got the ML 2 years ago and this never has occurred before. Just wondering if any of you seen something similar since the last Helix update?

Thanks