What is it that controls the dlls that SearchUI.exe (Cortana) loads when running?

I am troubleshooting an issue I'm having with SearchUI (Cortana).

(see Cortana starts being slow and laggy after launch of the UFT (Unified Functional Testing) application)

I have narrowed it down to this dll, EventHooks.dll that SearchUI tries and fails to load when it starts running. If I rename the dll, SearchUI starts working properly again.

However, I'm thinking that there is some way to tell SearchUI to just not try to load this dll at all, Where can we control this setting?

Here's an extract from the debugger output

'SearchUI.exe' (Win32): Unloaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'
'SearchUI.exe' (Win32): Loaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Unloaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'
'SearchUI.exe' (Win32): Loaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Loaded 'C:\Windows\System32\vcruntime140.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Loaded 'C:\Windows\System32\oleacc.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Loaded 'C:\Windows\System32\msvcp140.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Unloaded 'C:\Windows\System32\oleacc.dll'
'SearchUI.exe' (Win32): Unloaded 'C:\Windows\System32\msvcp140.dll'
'SearchUI.exe' (Win32): Unloaded 'C:\Windows\System32\vcruntime140.dll'
'SearchUI.exe' (Win32): Unloaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'
'SearchUI.exe' (Win32): Loaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Unloaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'
'SearchUI.exe' (Win32): Loaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Loaded 'C:\Windows\System32\vcruntime140.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Loaded 'C:\Windows\System32\msvcp140.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Loaded 'C:\Windows\System32\oleacc.dll'. Cannot find or open the PDB file.
'SearchUI.exe' (Win32): Unloaded 'C:\Windows\System32\oleacc.dll'
'SearchUI.exe' (Win32): Unloaded 'C:\Windows\System32\msvcp140.dll'
'SearchUI.exe' (Win32): Unloaded 'C:\Windows\System32\vcruntime140.dll'
'SearchUI.exe' (Win32): Unloaded 'C:\Program Files (x86)\HPE\Unified Functional Testing\bin64\EventsHook.dll'
d:\os\src\shellcommon\shell\cortana\core\src\userauthenticationmanager.cpp(861)\Cortana.Core.dll!00007FFD8B00C6E1: (caller: 00007FFD8B295FF6) ReturnHr(118) tid(41c4) 80070490 Élément introuvable.
Exception thrown at 0x00007FFDBA1DA388 (KernelBase.dll) in SearchUI.exe: 0x40080201: WinRT originate error (parameters: 0x0000000080070490, 0x0000000000000016, 0x000000554DBFEC10).
d:\os\src\shellcommon\shell\cortana\common\utilities\inc\cortanaregistryhelpers.h(44)\SearchUI.exe!00007FF6CAB76C67: (caller: 00007FF6CAA5FB0F) ReturnHr(28) tid(1f84) 80070002 Le fichier spécifié est introuvable.
    CallContext:[\CortanaApp_HandleActivationFromLaunch\CortanaApp_Initialize\AppStateManager_PerformFinalActivationActivities] 
d:\os\src\shellcommon\shell\cortana\common\utilities\inc\cortanaregistryhelpers.h(44)\Cortana.Core.dll!00007FFD8AFBBFD2: (caller: 00007FFD8AFD648E) ReturnHr(119) tid(1f84) 80070002 Le fichier spécifié est introuvable.
d:\os\src\shellcommon\shell\cortana\core\src\settings\configurationmanager.cpp(2711)\Cortana.Core.dll!00007FFD8AFD64AE: (caller: 00007FF6CAA5FBE6) LogHr(28) tid(1f84) 80070002 Le fichier spécifié est introuvable.
Exception thrown at 0x00007FFDBA1DA388 in SearchUI.exe: Microsoft C++ exception: Platform::COMException ^ at memory location 0x000000554DBFF128. HRESULT:0x80070490 Élément introuvable.
WinRT information: Élément introuvable.
Stack trace:
 >[External Code]
 >CortanaApi.dll!00007ffd8b2bff7f()
 >CortanaApi.dll!00007ffd8b29603a()
 >CortanaApi.dll!00007ffd8b200891()
 >CortanaApi.dll!00007ffd8b1ff999()
 >SearchUI.exe!00007ff6ca9c84ae()
 >SearchUI.exe!00007ff6caa5f287()
 >SearchUI.exe!00007ff6caa1ed88()
 >[External Code]