Very high memory and CPU usage

[culminis1]

I was using Zerotier on 4 GL.inet GL-MIFI openwrt routers. I have observed high amounts of memory and CPU usage, over 50%. Sometimes the routers crashes.
Do you noticed that? What could be the origin?

• Zerotier version 1.6.4
• OpenWrt version 19.07.8
• Zerotier router interface bridged (network segment 192.168.1.0/24) with br-lan (with o without IGMP Snooping and STP, both the same results)
• Zerotier central network: bridges allowed, no-assigning IPs, default route [ 192.168.1.0/24 => (LAN) ]

Any help will be welcome.
Thanks

[mwarning]

Please try OpenWrt master (uses ZeroTier 1.10.1) and see if the problem is still present?
You can download an image here https://firmware-selector.openwrt.org
Either use the package customization to add ZeroTier or use opkg update and opkg install zerotier

[culminis1]

First of all, thank you for your quick answer.
Despite I'm developer in other environments, I don't have many skills in unix/linux/openWrt systems. I haven't the toolchain for building my own openWrt image. I am using the GLinet manufacturer stable image, and installing the zerotier package on it. Is it a right procedure for testing your proposition?
I will try to install the 1.10.1 version on the current GLinet openWrt image, but I can not find the 1.10.1 version in OpenWrt package repositories, none higher than 1.8.6-2.
I have tried to install Zerotier version 1.8-6-2. Installation complaints against the libnatpmp1 absence, but libnatpmp is installed.
I've updated manually from the same repo than 1.8 zerotier, and when the service starts through errors libe _"libminiupnpc.so.17: _clock_gettime64: symbol not found"

How could address the problem?

Thank you again for your suporte
JL