Constant Drops in Graphics Performance of NVIDIA 9600M GS

[aphioner]

Hi. I successfully installed OS X Mavericks and upgraded it to DP7. 

 

My problem is that even though my computer has graphics acceleration, sometimes I get FPS drops which looks really awful. As you can see at the last picture below, AGPM (Applegraphicspowermanagement.kext) is loaded and able to change the GPU's performance states. It usually stays at 2nd performance state. So can anybody help me why this happens even after I disabled 3rd (lowest) state for my graphics card? 

 

Here are the values of my AGPM:

<key>Vendor10deDevice0648</key>
					<dict>
						<key>Heuristic</key>
						<dict>
							<key>ID</key>
							<integer>0</integer>
							<key>IdleInterval</key>
							<integer>250</integer>
							<key>SensorOption</key>
							<integer>1</integer>
							<key>SensorSampleRate</key>
							<integer>4</integer>
							<key>TargetCount</key>
							<integer>5</integer>
							<key>Threshold_High</key>
							<array>
								<integer>0</integer>
								<integer>45</integer>
								<integer>75</integer>
								<integer>100</integer>
							</array>
							<key>Threshold_Low</key>
							<array>
								<integer>0</integer>
								<integer>0</integer>
								<integer>87</integer>
								<integer>98</integer>
							</array>
						</dict>
						<key>LogControl</key>
						<integer>1</integer>
						<key>control-id</key>
						<integer>18</integer>
					</dict>

 

 

 

[aphioner]

Any help?