Strange "bug" with sound: SBIE2204 Cannot start sandboxed service RpcSs (1121)

I sandbox some free games that I download from internet because I don't trust them. These games obviously have sound, but the first time launching them sandbox shows a warning message that the "service RpcSs (1121) cannot start". The game works but there is no sound. If I kill the process and restart it, then there is no warning and the sound is working.

So for some reason the first time that the game is launched the "sound" service cannot be started but the second time it can. It seems to me as the service is a slow starter and after the first kick then it works, maybe waiting a little bit longer?