# Adjusting DSP Buffer Length and DSP Buffer Count leads to a crash
**URL:** https://qa.fmod.com/t/adjusting-dsp-buffer-length-and-dsp-buffer-count-leads-to-a-crash/19816
**Category:** Unreal Engine
**Created:** [February 1, 2023, 5:18pm UTC](https://qa.fmod.com/t/adjusting-dsp-buffer-length-and-dsp-buffer-count-leads-to-a-crash/19816 "2023-02-01T17:18:22Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@j.lafontaine](https://qa.fmod.com/u/j.lafontaine)
#### Post date: [February 1, 2023, 5:18pm UTC](https://qa.fmod.com/t/adjusting-dsp-buffer-length-and-dsp-buffer-count-leads-to-a-crash/19816/1 "2023-02-01T17:18:23Z")
Hi,
I’m using the 2.02.12 FMOD Plugin for UE 5.1
While investigating for an other issue, I stumble upon that post [Experiencing important latency in UE 4.20 with Fmod 1.10.08](https://qa.fmod.com/t/experiencing-important-latency-in-ue-4-20-with-fmod-1-10-08/14108) and decided to give a try at changing the DSP Buffer settings.
I fixed Buffer Count to 4 and tried lengths of 512, 1024 and 2048
With 512 and 2048 the game crashes soon after playing some sounds during a malloc.
My debugger tells me it’s called from “c:\jk\workspace\Build\_\_2.2\_\_Unreal\_Win\core\_api\src\fmod\_dsp\_transceiver.cpp(193)”
Here’s the complete stack:
[Inlined] \_mi\_page\_thread\_free\_collect(mi\_page\_s \*) page.c:175
[Inlined] \_mi\_page\_free\_collect(mi\_page\_s \*,bool) page.c:196
\_mi\_free\_delayed\_block(mi\_block\_s \*) alloc.c:523
[Inlined] \_mi\_heap\_delayed\_free(mi\_heap\_s \*) page.c:283
\_mi\_malloc\_generic(mi\_heap\_s \*,unsigned long long) page.c:856
\_mi\_heap\_malloc\_zero(mi\_heap\_s \*,unsigned long long,bool) alloc.c:148
mi\_heap\_malloc\_zero\_aligned\_at(mi\_heap\_s \*const,const unsigned long long,const unsigned long long,const unsigned long long,const bool) alloc-aligned.c:51
[Inlined] mi\_heap\_malloc\_aligned\_at(mi\_heap\_s \*,unsigned long long,unsigned long long,unsigned long long) alloc-aligned.c:66
[Inlined] mi\_heap\_malloc\_aligned(mi\_heap\_s \*,unsigned long long,unsigned long long) alloc-aligned.c:70
mi\_malloc\_aligned(unsigned long long,unsigned long long) alloc-aligned.c:96
[Inlined] FMallocMimalloc::TryMalloc(unsigned long long,unsigned int) MallocMimalloc.cpp:61
FMallocMimalloc::Malloc(unsigned long long,unsigned int) MallocMimalloc.cpp:66
FMemory::Malloc(unsigned long long,unsigned int) FMemory.inl:30
FMODMemoryAlloc(unsigned int,unsigned int,const char \*) FMODStudioModule.cpp:62
0x00007ff84c4c72c8
0x00007ff84c4c755b
0x00007ff84c52845a
0x00007ff84c527ced
0x00007ff84c4a219d
0x00007ff84c4a228b
0x00007ff84c4a228b
0x00007ff84c4a2315
0x00007ff84c4a2315
0x00007ff84c4a228b
0x00007ff84c4a228b
0x00007ff84c4a2315
0x00007ff84c4a228b
0x00007ff84c4a2315
0x00007ff84c4a228b
0x00007ff84c4a228b
0x00007ff84c4a2315
0x00007ff84c4a2516
0x00007ff84c4cec1e
0x00007ff84c4cdb17
0x00007ff84c4cd6cf
0x00007ff84c4cd3a8
0x00007ff84c4d8301
0x00007ff84c4c97b1
0x00007ff84c4d339c
0x00007ff84c55972e
0x00007ff9062726bd
0x00007ff906a8dfb8
---
### Author:  [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [February 2, 2023, 12:58am UTC](https://qa.fmod.com/t/adjusting-dsp-buffer-length-and-dsp-buffer-count-leads-to-a-crash/19816/2 "2023-02-02T00:58:13Z")
Hi,
Unfortunately, I was not able to reproduce the issue. Is it possible to get a stripped-out version of the project you are experiencing this on uploaded to your [Profile](https://fmod.com/profile#uploads) or DM’d to me?
Thanks for bringing this to our attention.
---
### Author:  [@j.lafontaine](https://qa.fmod.com/u/j.lafontaine)
#### Post date: [February 2, 2023, 4:12pm UTC](https://qa.fmod.com/t/adjusting-dsp-buffer-length-and-dsp-buffer-count-leads-to-a-crash/19816/3 "2023-02-02T16:12:51Z")
Would a packaged version be sufficient ?
---
### Author:  [@Connor\_FMOD](https://qa.fmod.com/u/Connor_FMOD)
#### Post date: [February 2, 2023, 9:08pm UTC](https://qa.fmod.com/t/adjusting-dsp-buffer-length-and-dsp-buffer-count-leads-to-a-crash/19816/4 "2023-02-02T21:08:58Z")
Apologies, a version of the UE project.