2 issues noted with my setup after firmware upgrade to  1.4.3 Build 20250814 rel.60946(4555)

For info, my network setup is two AX72 V1 routers. One is the main router and the other is configured as an Easymesh Satellite that is connected using Ethernet backhaul. There is a TP-Link TL-SG1016D unmanaged gigabit switch connecting them. On average, there would 34 devices simultaneously connected , 24 IoT tp-Link smart plugs, washer, dryer (isolated on  IoT Wifi), 3 laptops, 3 HD and 4K TV's, 2 phones, a VoIP phone, 3 laptops.  10 of the devices would normally be connected via the Easymesh satellite. PC's, laptops, VoIP phone, NAS etc are wired ethernet.

A) First issue was Easymesh appears not to like using the ECO Mode - Power Saving feature. I set is to be on from 0:00 to 09:00. Its fine fine when it first activates and I can see the power on the WiFi is reduced. When it is turned off at 09:00, I soon note that the satellite AX72 WiFi is only operating at 30 mbits (testing with Pixel 8/Speedtest.Net). After reboot of the AX72's it is back to my normal 850 to 930mbits (I have a megabit fibre connection). the CPU on the main router is also up to 65-80% whereas it is usually 45-55%. When I stopped ECO Mode, everything went back to my normal average of 45-55%. With Easymesh and the second AX72 removed from the network ECO Mode appears fine.

My suspicion is that Easymesh doesn't not play well with power changes when using the new ECO Mode. Anyone else noticed similar behaviour?

B) I turned on and tried both the new DoT and DoH privacy settings for DNS and tested both.  DoT triggered the orange Internet connection issue LED on the Satellite AX72 intermittently (two to 4 times on hour). Streaming etc wasn't lost but I saw spikes on the CPU. DoH also triggered the orange Internet connection issue LED but not as often. The RAM on the main AX72 router went up to 2% to 60% but that is to be expected with the DoH encryption overhead. The real issue with these privacy setting was intermittent delays of up to 5 seconds in getting a DNS response (i.e. web page loading being intermittently stalled).

Again, I'm suspicious of an Easymesh set up not playing well with these privacy settings (though I know some ISP's do not play well with DoT regards handling port 853 being open for TLS). I don't think DoH should have been an issue though?

Finally - the network as described has been highly stable, very reliable, everything just works at the optimum speed under Firmware 1.2.6 . Using the settings above under Firmware 1.4.3,  I had CPU much higher (especially after using ECO Mode over 24 hours). With them off, performance is great, snappy page loads, and the CPU is back to a rock solid 45-55% and the RAM is 58% and doesn't budge - just as per FW 1.2.6.