urgent problem RB and hotspot bridge

Hi everyone,
Recently I got a few Rb532A s and trying to run them as an AP.

My setup is

RB532A (400mhz) with RB502 + xr2 + 2x R52 + eth1 (up)

It is powered with 18v power adapter.

i have another computer running as a hotspot.

192.168.178.1 ---- Hotspot IP eth2
212.xxxxx ---- WAN IP

eth2 is connected with eth1 with a cat5.

I want to use the RB only as an AP and computer to do the Hotspot.
Eth1 on RB — 192.168.179.1

First I have bridged all ports together on the RB.
bridge ports — eth1 + and all wireless interfaces

Then added 179.1 to the ip bindings list as BYPASSED in the computer hotspot.

it worked good for a few minutes than the pings went abnormally high like 2000ms and suddenly it went off. Rite now its working with high latency with a lot of timeouts. (both to 178.1 and 179.1)
System is unstable and not funcioning as expected.

Now im thinking a way to do it with routing but tried a few things it doesnt work.

can someone please help on routing the wireless interfaces to the hotspot server instead of bridging ?

first of all i suggest not to run more than 2 cards on rb if heavy access is involved, then replace the passive 18v poe with 48v af.