I have an Ap Bridge on 2,4 GHz and I have 15-16 Clients conected with this Ap Bridge. Everything is OK but sudenly everything goes crazy loosing packets and after 1-2 Hours come back to normaly. It’s there someone who can help me, please ? I’m waiting your answer. Thanks !!!
You should give us more details!
What card you are using, type of antenna, what are the signals, does client disconnects?
When “everything goes crazy” are the signals/noise the same like when everything is normal?
Did you try flood ping when everything is fine and when you see problems?
Did you try to ping user by user with 1500 bytes in both situations?
Maybe you have problem users exchanging files over AP and this is something you can’t see in traffic log?
Try to disable forwarding for clients and see what happends.
Try changing channels.
Try changing everything 
Cheers…