New Xiaomi router AC2100

I experience issue with latest Xiaomi AC2100 router - it has MT7621 ver:1 eco:4 CPU. Using 23.05 TX power on 2.4MHz is limited to 7 dBm. Tried latest snapshot - TX power now can go up to 15 dBm. I have two older AC2100 (MT7621 ver:1 eco:3) that can go up to 27dBm on 2.4. Can this be fixed?

I’ve encountered an issue where, after 1-3 weeks, a client is connected to my network but can’t transfer data. The affected client(s) seems to be random. The other clients have no issues.
Additionally, my IKEA Symphonisk Wi-Fi speaker, which already has a poor connection due to its old Wi-Fi standard, has become even more unstable, experiencing dropouts. However, both issues are resolved when I reboot or power cycle the Xiaomi AC2100 (firmware version 23.05.2).

Any Ideas?