Function at 0x451b30
Capabilities:
Check for time delay via queryperformancecounter

Disassembly:
sub esp, 0x10
push esi
mov esi, ecx
mov eax, dword [esi]
call dword [eax + 0x1c]
test eax, eax
js 0x451d99
mov ecx, dword [esi + 0x2a3d8]
lea eax, [esi + 0x2a398]
push eax
push ecx
mov edx, dword [ecx]
call dword [edx + 0x38]
test eax, eax
js 0x451d99
mov eax, dword [esi + 0x2a3d8]
lea edx, [esp + 4]
push edx
push 0
push 0
mov ecx, dword [eax]
push eax
call dword [ecx + 0x40]
mov ecx, dword [esp + 4]
lea eax, [esi + 0x2a4b0]
push eax
push ecx
mov edx, dword [ecx]
call dword [edx + 0x20]
mov eax, dword [esp + 4]
push eax
mov ecx, dword [eax]
call dword [ecx + 8]
cmp dword [esi + 0x2a5a0], 0
je 0x451bc9
cmp dword [esi + 0x2a384], 0
jne 0x451bc9
push 0xfffffffffffffff4
push dword [esi + 0x2a3cc]
call dword [sym.imp.USER32.dll_GetClassLongA]
mov ecx, dword [esi + 0x2a3d8]
mov edx, eax
call fcn.004561b0
mov eax, dword [esi + 0x2a3d8]
push 1
push eax
mov ecx, dword [eax]
call dword [ecx + 0x30]
mov eax, dword [esi]
mov ecx, esi
call dword [eax + 0x10]
test eax, eax
js 0x451d99
cmp dword [esi + 0x2a390], 0
jne 0x451d97
cmp dword [0x5aa968], 0
mov dword [esi + 0x2a394], 1
jne 0x451c2c
lea eax, [esp + 8]
mov dword [0x5aa968], 1
push eax
call dword [sym.imp.KERNEL32.dll_QueryPerformanceFrequency]
mov dword [0x5aa978], eax
test eax, eax
je 0x451c7d
mov ecx, dword [esp + 8]
mov edx, dword [esp + 0xc]
mov dword [0x5aa940], ecx
mov dword [0x5aa944], edx
jmp 0x451c31
mov eax, dword [0x5aa978]
test eax, eax
je 0x451c7d
lea eax, [esp + 8]
push eax
call dword [sym.imp.KERNEL32.dll_QueryPerformanceCounter]
mov esi, dword [esp + 8]
xorps xmm0, xmm0
mov edx, dword [esp + 0xc]
mov ecx, esi
sub ecx, dword [0x5aa958]
mov eax, edx
mov dword [0x5aa970], esi
sbb eax, dword [0x5aa95c]
add dword [0x5aa950], ecx
movlpd qword [0x5aa958], xmm0
adc dword [0x5aa954], eax
mov dword [0x5aa974], edx
jmp 0x451ccd
call dword [sym.imp.WINMM.dll_timeGetTime]
movd xmm1, eax
cvtdq2pd xmm1, xmm1
shr eax, 0x1f
addsd xmm1, qword [eax*8 + 0x581790]
mulsd xmm1, qword [0x581300]
movaps xmm0, xmm1
movsd qword [0x5aa948], xmm1
subsd xmm0, qword [0x5aa980]
addsd xmm0, qword [0x5aa960]
movsd qword [0x5aa960], xmm0
xorps xmm0, xmm0
movsd qword [0x5aa980], xmm0
cmp dword [0x5aa968], 0
jne 0x451d0a
lea eax, [esp + 8]
mov dword [0x5aa968], 1
push eax
call dword [sym.imp.KERNEL32.dll_QueryPerformanceFrequency]
mov dword [0x5aa978], eax
test eax, eax
je 0x451d57
mov ecx, dword [esp + 8]
mov edx, dword [esp + 0xc]
mov dword [0x5aa940], ecx
mov dword [0x5aa944], edx
jmp 0x451d0f
mov eax, dword [0x5aa978]
test eax, eax
je 0x451d57
mov ecx, dword [0x5aa958]
mov eax, ecx
mov edx, dword [0x5aa95c]
or eax, edx
jne 0x451d38
lea eax, [esp + 8]
push eax
call dword [sym.imp.KERNEL32.dll_QueryPerformanceCounter]
mov edx, dword [esp + 0xc]
mov ecx, dword [esp + 8]
mov dword [0x5aa958], ecx
xor eax, eax
mov dword [0x5aa95c], edx
mov dword [0x5aa970], ecx
mov dword [0x5aa974], edx
pop esi
add esp, 0x10
ret
movsd xmm0, qword [0x5aa980]
ucomisd xmm0, qword [0x581228]
lahf
test ah, 0x44
jp 0x451d8f
call dword [sym.imp.WINMM.dll_timeGetTime]
movd xmm0, eax
cvtdq2pd xmm0, xmm0
shr eax, 0x1f
addsd xmm0, qword [eax*8 + 0x581790]
mulsd xmm0, qword [0x581300]
movsd qword [0x5aa980], xmm0
xor eax, eax
pop esi
add esp, 0x10
ret