IGMP-proxy on ROS 5.4 and VLAN - works slowly

Good day!

I put IGMP-proxy on ROS 5.4 server (Supermicro X8DTI-F with 3 Supermicro AOC-SG-I2 (2x1Gb LAN) and 2 XEON 5620 2GHz)

  1. On FullHD TV image has broken or damaged frames
  2. When i make some changes in IGMP-proxy ( enable/disable interfaces, etc) - my ROS sometimes crash

I move IGMP-proxy from ROS to RB433AH (5.1) and FullHD TV works fine
but
when i try to show FullHD TV via VLAN - also damaged frames !!!

Why so powerful server can’t play 1 FullHD TV channel (CPU 5% - 15%) but RB433 can play 4-6 FullHD TV channels (CPU 40% - 50%), and how to see FullHD TV via VLANs without damaged frames ?

thank You anticipate!