I can definitely agree with you on the speedup but it does cause an issue in Twin Snakes when using it along with HLE audio (well at least for me). The controls start acting weird and it's difficult to aim, peek around corners, etc.
Current System: Laptop (Acer Aspire V3-771G-9875)
OS: Windows 7 - x64
CPU: Intel Core i7-3610QM 2.3GHz (Turbo Boost Technology up to 3.3GHz)
GPU: NVIDIA GeForce GT 650M 2GB
RAM: 6GB
OS: Windows 7 - x64
CPU: Intel Core i7-3610QM 2.3GHz (Turbo Boost Technology up to 3.3GHz)
GPU: NVIDIA GeForce GT 650M 2GB
RAM: 6GB