Here is PulseAudio output when game freezes:
I: [alsa-source-USB Audio] alsa-source.c: Decreasing wakeup watermark to 13,38 ms
I: [alsa-source-USB Audio] alsa-source.c: Decreasing wakeup watermark to 8,38 ms
I: [alsa-source-USB Audio] alsa-source.c: Decreasing wakeup watermark to 4,19 ms
I: [alsa-source-USB Audio] alsa-source.c: Decreasing wakeup watermark to 4,00 ms
D: [pulseaudio] module-suspend-on-idle.c: Source alsa_input.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-input becomes idle, timeout in 5 seconds.
D: [alsa-source-USB Audio] alsa-source.c: hwbuf_unused=0
D: [alsa-source-USB Audio] alsa-source.c: setting avail_min=95809
D: [pulseaudio] module-suspend-on-idle.c: Source alsa_input.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-input becomes idle, timeout in 5 seconds.
I: [pulseaudio] source-output.c: Freeing output 3 "Record Stream"
I: [pulseaudio] client.c: Freed 12 "FMOD Record Helper"
I: [pulseaudio] protocol-native.c: Connection died.
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-output becomes idle, timeout in 5 seconds.
D: [alsa-sink-USB Audio] alsa-sink.c: hwbuf_unused=0
D: [alsa-sink-USB Audio] alsa-sink.c: setting avail_min=95119
D: [alsa-sink-USB Audio] alsa-sink.c: Requested volume: front-left: 37985 /  58% / -14,21 dB,   front-right: 37985 /  58% / -14,21 dB
D: [alsa-sink-USB Audio] alsa-sink.c: Got hardware volume: front-left: 38295 /  58% / -14,00 dB,   front-right: 38295 /  58% / -14,00 dB
D: [alsa-sink-USB Audio] alsa-sink.c: Calculated software volume: front-left: 65005 /  99% / -0,21 dB,   front-right: 65005 /  99% / -0,21 dB (accurate-enough=yes)
D: [alsa-sink-USB Audio] sink.c: Volume not changing
D: [alsa-sink-USB Audio] alsa-sink.c: Requested to rewind 384000 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: Limited to 5888 bytes.
D: [alsa-sink-USB Audio] alsa-sink.c: before: 1472
D: [alsa-sink-USB Audio] alsa-sink.c: after: 1472
D: [alsa-sink-USB Audio] alsa-sink.c: Rewound 5888 bytes.
D: [alsa-sink-USB Audio] sink.c: Processing rewind...
D: [alsa-sink-USB Audio] sink.c: latency = 8085
D: [alsa-sink-USB Audio] source.c: Processing rewind...
D: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-output becomes idle, timeout in 5 seconds.
D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum.
I: [pulseaudio] sink-input.c: Freeing input 1 "Mixer Stream"
I: [pulseaudio] protocol-native.c: Connection died.
D: [pulseaudio] ratelimit.c: 110 events suppressed
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
D: [pulseaudio] flist.c: pulsecore/memblockq.c: list_items flist is full (don't worry)
I: [pulseaudio] client.c: Freed 11 "FMOD Ex App"
I: [pulseaudio] module-suspend-on-idle.c: Source alsa_input.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-input idle for too long, suspending ...
D: [pulseaudio] source.c: Suspend cause of source alsa_input.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-input is 0x0004, suspending
I: [alsa-source-USB Audio] alsa-source.c: Device suspended...
D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum.
I: [pulseaudio] module-suspend-on-idle.c: Sink alsa_output.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-output idle for too long, suspending ...
D: [pulseaudio] sink.c: Suspend cause of sink alsa_output.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.analog-stereo-output is 0x0004, suspending
I: [alsa-sink-USB Audio] alsa-sink.c: Device suspended...
D: [pulseaudio] core.c: Hmm, no streams around, trying to vacuum.
D: [pulseaudio] module-udev-detect.c: /dev/snd/controlC1 is accessible: yes
D: [pulseaudio] module-udev-detect.c: Resuming all sinks and sources of card alsa_card.usb-Creative_Technology_Ltd_SB_Omni_Surround_5.1_X00000Q6-00.