[SOLVED] Interruption of Playback in Squeezeboxserver

Hi,

I am experiencing problems with interruption of the music stream in my max2play system.It already appeared from time to time last week, but today it got really bad, stopping playing approx. every minute for 10s to 30s approximately. It appers both when streaming radio as well as when playing from local storage or even directly from the USB plugged into the Raspberry Pi server. If I run locally stored music, the time counter in the LMS web interface keeps on running, but than jumps back a few times and than goes on at the point and tiem where it stopped playing.
I am running max2play in 3 rooms synchronously. The server is connected directly to my router, one player is connected via Power Lan, one via wifi. I tried changing the server to the other Raspberries, but that does not help. The music is synchronous while it runs and also stops synchronously.

I am running max2play ver. 2.48 on Raspberry Pis with Hifiberry using Squeezebox and Squuezelite.

On the server, I have the following debug info from the max2play web interface:
#### FILESYSTEM ####
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 15186900 3903340 10632516 27% /
/dev/root 15186900 3903340 10632516 27% /
devtmpfs 470368 0 470368 0% /dev
tmpfs 94936 592 94344 1% /run
tmpfs 5120 0 5120 0% /run/lock
tmpfs 189860 0 189860 0% /run/shm
/dev/mmcblk0p1 57288 14736 42552 26% /boot
//DSL-AC87VG-71FE/Stream 1953480700 830216668 1123264032 43% /mnt/Elements/Stream

#### LOAD AVERAGE ####
0.31 0.26 0.22 1/115 17886

#### KERNEL ####
Linux max2play 3.18.7-v7+ #755 SMP PREEMPT Thu Feb 12 17:20:48 GMT 2015 armv7l GNU/Linux

#### LINUX-VERSION ####
Distributor ID: Debian
Description: Debian GNU/Linux 7.8 (wheezy)
Release: 7.8
Codename: wheezy

There are no errors in the squeezebox log, just a warning on SQL:

2019-04-26 10:01:51 squeezeboxserver_safe started.
[19-04-26 10:01:57.6523] main::init (387) Starting Logitech Media Server (v7.9.1, 1522157629, Fri Mar 30 12:27:11 CEST 2018) perl 5.014002 – arm-linux-gnueabihf-thread-multi-64int
[19-04-26 10:01:58.9821] Slim::Utils::Misc::msg (1252) Warning: [10:01:58.9808] DBIx::Class::ResultSet::update_or_create(): Query returned more than one row. SQL that returns multiple rows is DEPRECATED for ->find and ->single at /usr/share/perl5/Slim/Schema.pm line 1877

Any help would be highly appreciated.

Thanks and best regards