NextDNS CLI Crash with my router AC86U Merlin Firmware

Dear NextDNS,

I have been installed NextDNS in my router for a year already.

However, It was found that accessing to internet is not stable and slow in the recent days.

I found there are timeout in the nextdns log and  nextdns is crashed in the router log.

Is there any suggestion on fixing this issue?

Following is the router system log

Oct 11 01:51:48 kernel: Code: e59d3014 e59d4018 e59d501c ef000000 (e59f6038)
Oct 11 01:51:48 kernel: CPU: 0 PID: 5775 Comm: nextdns Tainted: P           O    4.1.27 #2
Oct 11 01:51:48 kernel: Hardware name: Broadcom-v8A (DT)
Oct 11 01:51:48 kernel: task: ffffffc013592a80 ti: ffffffc010c54000 task.ti: ffffffc010c54000
Oct 11 01:51:48 kernel: PC is at 0x15f60
Oct 11 01:51:48 kernel: LR is at 0x15f24
Oct 11 01:51:48 kernel: pc : [<0000000000015f60>] lr : [<0000000000015f24>] pstate: 60000010
Oct 11 01:51:48 kernel: sp : 0000000001119c08
Oct 11 01:51:48 kernel: x12: 00000000011060a3
Oct 11 01:51:48 kernel: x11: 0000000000000007 x10: 0000000001002128
Oct 11 01:51:48 kernel: x9 : 0000000000000000 x8 : 0000000000000007
Oct 11 01:51:48 kernel: x7 : 00000000000001b7 x6 : 0000000001002170
Oct 11 01:51:48 kernel: x5 : 0000000000000000 x4 : 0000000000000000
Oct 11 01:51:48 kernel: x3 : 0000000000000200 x2 : 0000000000000001
Oct 11 01:51:48 kernel: x1 : 00000000011060a0 x0 : 00000000ffffff9c
Oct 11 01:51:59 kernel: Code: e59d3014 e59d4018 e59d501c ef000000 (e59f6038)
Oct 11 01:51:59 kernel: CPU: 0 PID: 5577 Comm: nextdns Tainted: P           O    4.1.27 #2
Oct 11 01:51:59 kernel: Hardware name: Broadcom-v8A (DT)
Oct 11 01:51:59 kernel: task: ffffffc009e26a40 ti: ffffffc009890000 task.ti: ffffffc009890000
Oct 11 01:51:59 kernel: PC is at 0x15f60
Oct 11 01:51:59 kernel: LR is at 0x15f24
Oct 11 01:51:59 kernel: pc : [<0000000000015f60>] lr : [<0000000000015f24>] pstate: 60000010
Oct 11 01:51:59 kernel: sp : 000000000130553c
Oct 11 01:51:59 kernel: x12: 00000000012dcb63
Oct 11 01:51:59 kernel: x11: 0000000000000007 x10: 00000000011b3b08
Oct 11 01:51:59 kernel: x9 : 0000000000000000 x8 : 0000000000000007
Oct 11 01:51:59 kernel: x7 : 00000000000001b7 x6 : 00000000011b3b50
Oct 11 01:51:59 kernel: x5 : 0000000000000000 x4 : 0000000000000000
Oct 11 01:51:59 kernel: x3 : 0000000000000200 x2 : 0000000000000001
Oct 11 01:51:59 kernel: x1 : 00000000012dcb60 x0 : 00000000ffffff9c

Attached is the nextdns log extracted from  nextdns log

Oct 10 13:08:21 nextdns[1316]: Query 192.168.1.193 UDP A ccp-lh.googleusercontent.com. none (qry=79/res=46) 5000ms : doh resolve: context deadline exceeded
Oct 10 13:08:21 nextdns[1316]: Query 192.168.1.61 UDP A webckipe.travelsky.com.cn. none (qry=76/res=43) 5004ms : doh resolve: context deadline exceeded
Oct 10 13:08:21 nextdns[1316]: Query 192.168.1.61 UDP A hk.trip.com. none (qry=62/res=29) 5005ms : doh resolve: context deadline exceeded
Oct 10 13:08:21 nextdns[1316]: Query 192.168.1.61 UDP A cp801.prod.do.dsp.mp.microsoft.com. none (qry=85/res=52) 5015ms : doh resolve: context deadline exceeded
Oct 10 13:08:21 nextdns[1316]: Query 192.168.1.61 UDP A www.msftncsi.com. none (qry=67/res=34) 5004ms : doh resolve: context deadline exceeded
Oct 10 13:08:21 nextdns[1316]: Query 192.168.1.61 UDP A ipv6.msftconnecttest.com. none (qry=75/res=42) 5004ms : doh resolve: context deadline exceeded
Oct 10 13:08:21 nextdns[1316]: Query 192.168.1.61 UDP A hk.trip.com. none (qry=62/res=29) 5009ms : doh resolve: context deadline exceeded
Oct 10 13:08:22 nextdns[1316]: Query 192.168.1.61 UDP A cp801.prod.do.dsp.mp.microsoft.com. none (qry=85/res=52) 5016ms : doh resolve: context deadline exceeded
Oct 10 13:08:22 nextdns[1316]: Query 192.168.1.61 UDP A updatepc.xboxlive.com. none (qry=72/res=39) 5006ms : doh resolve: context deadline exceeded
Oct 10 13:08:22 nextdns[1316]: Query 192.168.1.61 UDP A hk.trip.com. none (qry=62/res=29) 5012ms : doh resolve: context deadline exceeded
Oct 10 13:08:22 nextdns[1316]: Query 192.168.1.61 TCP 65 hk.trip.com. none (qry=62/res=29) 5007ms : doh resolve: context deadline exceeded
Oct 10 13:08:23 nextdns[1316]: Query 192.168.1.61 UDP A cp801.prod.do.dsp.mp.microsoft.com. none (qry=85/res=52) 5013ms : doh resolve: context deadline exceeded
Oct 10 13:08:23 nextdns[1316]: Query 192.168.1.61 UDP A webckipe.travelsky.com.cn. none (qry=76/res=43) 5016ms : doh resolve: context deadline exceeded
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 TCP A hk.trip.com. none (qry=62/res=29) 1996ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 UDP A cp801.prod.do.dsp.mp.microsoft.com. none (qry=85/res=52) 4321ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.193 UDP A ccp-lh.googleusercontent.com. none (qry=79/res=46) 3296ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.193 UDP A ccp-lh.googleusercontent.com. none (qry=79/res=46) 3305ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 UDP AAAA www.microsoft.com. none (qry=68/res=35) 135ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 UDP A hk.trip.com. none (qry=62/res=29) 4352ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Received signal: broken pipe (ignored)
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 TCP A hk.trip.com. none (qry=62/res=29) 1538ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 TCP 65 hk.trip.com. none (qry=62/res=29) 1537ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 UDP AAAA www.microsoft.com. none (qry=68/res=35) 3329ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 UDP AAAA www.microsoft.com. none (qry=68/res=35) 3165ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 TCP 65 hk.trip.com. none (qry=62/res=29) 1998ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out
Oct 10 13:08:24 nextdns[1316]: Query 192.168.1.61 UDP AAAA www.microsoft.com. none (qry=68/res=35) 2148ms : doh resolve: read tcp 218.250.192.159:40272->45.11.104.186:443: read: connection timed out