Stubby dns-rebind crash

My router crashes when a few devices connect at the same time.

In the log I see the dns-rebind attack error for the DNS blocked urls and when these requests increase the router slows down the router till the DNS resolving dies.

I read Stubby does not have DNS cache so I thought that might be the problem.
I have tried to ad the cache values to dnsmasq.conf file but then the router stops working all together.

no-resolv                                                                      
dnssec                                                            
server=::1#53535                                                              
server=127.0.0.1#53535                                                        
listen-address::1,127.0.0.1                                         
cachesize=4192                                                                
min_cache_ttl=3600

What is the correct way to ad dns cache to the router in this case?

On this post I read that turning off DNS rebind solves the problem:

Also here: [OpenWrt Wiki] Dnsmasq DHCP server

But many people warn against the security risks. What is the right solution for the router crash problem?