TYT MD-UV390 Plus - Need Help

I have purchased four UV390’s from your site.

The issue I am having is transmitting encrypted (RC4, AES128, AES256, etc) voice (DMR) over simplex. Sometimes it works, in that the voice is decrypted on the other radios, and sometimes it doesn’t. Sometimes on just one of the radios, sometimes on all of the radios. This issue is present on both Private and Group calls. Unencrypted voice (DMR) always works, both in simplex, and via repeater. Data (text) calls, always work (Private and Group). Uncrypted voice always works.

Is this a known issue? If so, is it due to a setting in the CPS software?

I am using CPS version 2.34 and the radio firmware on all of the radios is S219.043

I have tried both the stock keys, and a user generated keys.

UPDATE: I’ve updated to CPS v2.41 and it has made the radios more stable, but hasn’t cleared up the decryption issue 100% of the time.

Dear Robert, I was able to get my screen back on. But now I have problems with the CPS. I’m still on an old version 1.30 for my UV390plus10WGPS120k. Could you please forward me the 2.41 version? Or if there is a even more current version out, I would be interested to copy it. I hope to hear from you.
Yours, Bernd

I’m also using v2.41, with D219.043 firmware. The encryption issue is driving me mad! Maybe the radio’s processer is struggling to keep up with AES being used. But I also don’t see this problem occurring everywhere.
As for now, AES is barely worth using.