Which model do you have?

Just noticed that there is a newer firmware that fixes the issue: Modifications and Bug Fixes 1. Fix the problem that the device can't awaken from Power saving mode sometimes. 2. Fix the problem that...

I pm'd you the correct version.

Sorry, forgot about your post.

Hi, the reason for this behaviour is an additional power saving feature, which reduces performance under low load. TP-Link provided me a custom TP Link utility which allows to disable both power save...

No, there is probably some additional undiscovered or misconfigured DHCP Server in your Network. Definitely not a problem of the adapters.