What could cause eoip tx-drops?

RouterOS General
1

Two Mikrotik Hex devices at different locations are connected by an SSTP tunnel. I’ve set up an EoIP bridge over this that works. The device on the other side behaves as if it’s in the remote network. However, on the EoIP bridge I see tx-drops:

[admin@hex1] /interface> print stats
Flags: D - dynamic, X - disabled, R - running, S - slave 
 #     NAME                   RX-BYTE           TX-BYTE     RX-PACKET     TX-PACKET RX-DROP TX-DROP
....
 6  RS eoip1                1 740 378         2 573 980        12 212         2 333       0      92
 7  R  hex2-out          459 464 033       489 414 844     1 934 042       636 885       0       0
 8  R  hex2_bridge     1 063 462 323       663 082 225     3 007 413       841 957       0       0
[admin@hex1] /interface>

How can I figure out which 92 transmitted packets are dropped and why?

2

Update, noticed something on the SSTP interface: it has tx-queue-drops.

[admin@hex] /interface> print stats-detail from=<sstp-hex2> 
Flags: D - dynamic, X - disabled, R - running, S - slave 
 0 DR  name="<sstp-hex2>" last-link-up-time=dec/16/2021 13:49:41 link-downs=0 rx-byte=8 397 194 107 
       tx-byte=1 202 895 592 rx-packet=7 603 713 tx-packet=6 610 687 rx-drop=0 tx-drop=0 
       tx-queue-drop=6 670 668 rx-error=0 tx-error=0 fp-rx-byte=0 fp-tx-byte=0 fp-rx-packet=0 
       fp-tx-packet=0 
[admin@hex] /interface>

What are tx-queue-drops and how can I prevent them?