I was having some trouble with slowdown on Twilight Princess's Hyrule Field (Issue 7825). The usual patch led to a bunch of write access errors with the v2 rom at launch (being for v1) but I think I found the codepoints for v2. Please tell me if it works on your end as well.
Code:
$Hyrule Field Speed Hack for v2
0x80040C38:dword:0x60000000
0x80040C54:dword:0x60000000
0x80040C6C:dword:0x60000000
0x80040C88:dword:0x60000000
0x80040CE0:dword:0x60000000
0x80040CFC:dword:0x60000000
0x80040D14:dword:0x60000000
0x80040D30:dword:0x60000000