Splinter Cell: Convinction | Stealth Gameplay | Realistic Difficulty

A part of the third mission ''Price Airfield'' in Splinter Cell: Convinction.
Convinction is a great game, but the pc port is terrible in term of performance. The game seems to utilize more cpu than gpu, so while recording it becomes unstable.
The only way I found to improve fps is to cut the gameplay in two parts and restart my pc before recording each part.
I hope you enjoy!
Pc specs:
Asus N751JK-T7043H (laptop)
CPU: Intel Core i7-4710HQ (2.50 GHz / 3.50 GHz)
GPU: NVIDIA GeForce GTX 850M (4GB DDR3)
RAM: 16 GB DDR3L-1600
HARD DISK: 2 x SATA 750 GB 7200 rpm