SERVFAIL errors with Synology *.direct.quickconnect.to URLs

I'm a recent convert from NextDNS. Never had issues with their service and accessing my Synology devices, but since switching to Control D I am having about a 20% failure rate with connections to *.direct.quickconnect.to. The exact DNS error shown in the logs is "SERVFAIL"

Short of creating a cname redirect in Control D for *.direct.quickconnect.to to something like mynetwork.dyndns.org which in turn forwards to whatever my dynamic IP is at the time, is there any workaround or anything I can configure differently in order to get more consistent results?