Upgrade to B5 on AX86 (Aimesh master) and ax5200 (aimesh slave) and both running fine.
Guest Wifi #1 seems to be fixes and less noise in the log also.
Looks very promising ...
It look like enabling bandwith limit on guest #1 brings down the wan/dns/ ...
@RMerlin
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.641 wl1: wlc_ampdu_dotxstatus_aqm_complete: tx phy error (0x8500)
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.641 wl1.0: wlc_send_bar: for d2:26:9e:f4:61:60 seq 0x6 tid 0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.641 wl1: wlc_ampdu_dotxstatus_aqm_complete: tx phy error (0x8500)
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.641 wl1.0: wlc_send_bar: for d2:26:9e:f4:61:60 seq 0x7 tid 0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.949 wl1: wlc_ampdu_dotxstatus_aqm_complete: tx phy error (0x8500)
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.949 wl1.0: wlc_send_bar: for d2:26:9e:f4:61:60 seq 0x3 tid 6
Jan 26 07:56:10 rtaxbeast acsd: acsd_main_loop(1107): sync_id: 24413, status:1, misc.error/abort
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 wl1: PSM microcode watchdog fired at 882 (seconds). Resetting.
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 wl1: reason = psm watchdog at 882 seconds. corerev 129.1 ucode revision 1570.159 features 0x9106
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 psmdebug 0x01ff000d phydebug 0x48 macctl 0x4160403 maccmd 0x4
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: psm_brc 0x0080 psm_brc_1 0x424a M_UCODE_DBGST 0x2
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 PSMR1: psmdebug 0x0000009b macctl 0x4060402 maccmd 0x0 M_UCODE_DBGST 0x2
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 brwk_0 0x2401 brwk_1 0x0094 brwk_2 0x22a0 brwk_3 0x0ff2 brwk_4 0x0006
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 ifsstat 0xaf ifsstat1 0xff txectl 0x4000 txestat 0x425
Jan 26 07:56:10 rtaxbeast kernel: CFG80211-ERROR) wl_cfg80211_change_station : WLC_SCB_AUTHORIZE sta_flags_mask not set
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 rxestat1 0x4181 rxestat2 0x540 rcv_frmcnt 0x0 rxe_rxcnt 0x2e
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 wepctl 0x0
Jan 26 07:56:10 rtaxbeast hostapd: eth7: STA 2c:2b:f9:92:45:8c IEEE 802.11: associated
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 aqmf_ready0 0x0 aqmf_ready1 0x0 aqmf_ready2 0x0 aqmf_ready3 0x0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 aqmf_ready4 0xa wepstat 0x0 wep_ivloc 0x10 wep_psdulen 0x187
Jan 26 07:56:10 rtaxbeast hostapd: eth7: STA 2c:2b:f9:92:45:8c RADIUS: starting accounting session F5B50369FABA66B9
Jan 26 07:56:10 rtaxbeast hostapd: eth7: STA 2c:2b:f9:92:45:8c WPA: pairwise key handshake completed (RSN)
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 rxe_errval 0x0 rxe_errmask 0x20f rxe_status3 0x100 txe_status2 0x425
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 dbg_bmc_status 0x0 psm_chk0_err 0x0 psm_chk1_err 0x0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 PC :
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R0: 0x17f7 0x17f7 0x17f7 0x17f7
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 R1: 0x9b 0x9b 0x9b 0x9b
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 phydebug :
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x48 0x48 0x48 0x48
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 pktproc 0x101 pktproc 0x101 pktproc 0x101 pktproc 0x101
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 TxFifoStatus0 0x1c3 TxFifoStatus1 0x1c3
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 gpiosel 0x0 gpiolo 0x0 gpiohi 0x0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 gpiosel 0x1 gpiolo 0x0 gpiohi 0x0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 psm stack_status : 0x8000
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 psm stack_entries:
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x17f7
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x1959
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x0629
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x1f24
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x09ff
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x3d1f
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x3438
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0x3fdf
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 0) usr_count = 0, schedid = 0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 1) usr_count = 0, schedid = 0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 2) usr_count = 0, schedid = 0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 3) usr_count = 0, schedid = 0
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 wl1: wlc_check_assert_type HAMMERING: reinit_reason 2
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 wl1: fatal error, reinitializing
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 wl1: fatal error, reinitializing, total count of reinit's[1]
Jan 26 07:56:10 rtaxbeast kernel: CONSOLE: 033178.989 wl1: 802.11 reinit reason[2], count[1]