what version of FW works stable for You in multipoint scenario ?

I'm getting disconnections and bad jitter on my wap60g AP -> 3x APC : wap60g and 2xlhg60

I am experiencing a similar issue with 2 clients

The far away client disconnets 145m rssi -69 and signal beetween 50 to 80, I have to reboot the AP to get it connected again.

Firmware 6.42.5

i've reverted back to 6.43rc17 and for now 4 days link uptime.
nevertheless It looks to me that transmission freezes from time to time, because I've seen some stalled frames in video streams, but at least not so dissapointing as 42.5.
still no perfect :/