Cluster locks, insert/update issues

Hello,
We’ve attempted a second migration to Percona cluster and we’re having issues realted inserts /updates on nodes.
This is our 3 node cluster configuration: http://wklejto.pl/249433
node1 :
80GB ram
4TB Raid 6 array, hdd 15k [FC 6gbit]
Intel® Xeon® CPU E5-2420 v2 @ 2.20GHz [24 cores]

node2 :
80GB ram
4TB Raid 6 array, hdd 15k [FC 6gbit]
Intel® Xeon® CPU E5-2420 v2 @ 2.20GHz [24 cores]

node3 :
80GB ram
4TB Raid 6 array, hdd 15k [FC 6gbit]
Intel® Xeon® CPU E5-2420 0 @ 1.90GHz [24 cores]

1gbps link between servers

  1. making updates on node 2 to table 1, while making insterts on node 1 to table 1 makes database unresponsive
  2. making large updates on node 2 in table 2
  3. we’ve also experienced today a total server lock, “BF lock wait long”, to unlock we’ve had to restart first node, and move writing to node 2
    Is there anything we can do in this situation when we can’t write anything to DB ?

Any ideas what we should change?
Load avarage:
node 2 [writing]: 6
node 1 [some writes, mostly selects]: 2
node 3 [mostly selects]: 2

We have 2 main tables in our DB.
We write to / update T1 on node 2,
and write to / update T2 on node 1

We do this to avoid deadlocks while using same tables on multiple nodes.

Thanks in advance,
Faq

I think I am having the same problem here:
https://bugs.launchpad.net/percona-xtradb-cluster/+bug/1671542