CCR36 and CCR16 afther update to 6.7

Hello afther upgrade to 6.7 we have big issues with ccr routers. Our latency is high and we see also packet loss. Please see attached image. One cloud router is attached ower AF24 link to X86 machine with ROS 6.7 and another CCR 16 router is attached directly thru ethernet cable to another CCR 36. Latency problem ocurs also with lan connection. Does somebody have this issue ?
The most problem is on the lan coneection between CCR16 and CCR36!
CCR 16 vs CCR 32 lan.png
CCR16 vs CCR 32 LAN.png
CCR16 vs X86 AF link.png

there are many posts about port speed negotiation problems with ccr. maybe problem lies here.