DoH work but have many errors in log

Hello. My ROS 6.48.2
I use DoH server https://dns.adguard.com/dns-query with verify DoH Certificate.
I’s work but i have about 200 errors in log per day as:
DoH server connection error: remote disconnected while in HTTP exchange - this more often
DoH server connection error: SSL: internal error (6)
DoH server connection error: Idle timeout - connecting
DoH server connection error: Idle timeout - waiting data
I search solution in internet, and found post’s with this problem at any DOH server, but don’t find solution.
By indirect signs, I assume this problem in connection tracker, but i don’t know how resolve this without connection’s log.

6.48.5 long-term no difference.

Errors split to 2 category
1)single errors once about a hour
2)group errors once per day.
When I routed DOH traffic to VPN single errors disapear