Fps drops in every game

Hello there.

Everytime I play a game on my laptop (such as Gta San andreas), I can play smoothly with +-60 fps. This is not the problem, the problem is that after around maybe 15 minutes my fps drops to 10-20. If I keep playing with that bad fps the fps will go up to 60 again after around 20 minutes. This is very annoying so I need help. This are my Laptop Specs:

Acer Aspire 5734Z Notebook Series Specifications
Part Number: Aspire5734Z Acer Aspire 5734Z Notebook Series

Feature Description
Operating System1 Genuine Windows® 7 Home Premium 64-bit2
Genuine Windows® 7 Home Basic 64-bit2
Processor / Speed1 Intel® Pentium® processor T4200/T4300/T4400/T4500 (1 MB L2 cache, 2/2.10/2.20/2.30 GHz, 800 MHz FSB, 35 W), supporting Intel® 64 architecture
Core Logic Chipset1 Mobile Intel® GL40 Express Chipset
System Memory1, 3, 4, Dual-channel DDR3 SDRAM support:
Up to 2 GB of DDR3 system memory, upgradable to 4 GB using two soDIMM modules5
Display 15.6" HD 1366 x 768 pixel resolution, high-brightness (200-nit) Acer CineCrystal™ TFT LCD, supporting simultaneous multi-window viewing
16:9 aspect ratio
Graphics1 Mobile Intel® GL40 Express Chipset with integrated 3D graphics, featuring Intel® Graphics Media Accelerator 4500M (Intel® GMA 4500M) with up to 1759 MB of Intel® Dynamic Video Memory Technology 5.0 (64 MB of dedicated system memory, up to 1695 MB of shared system memory), supporting Microsoft® DirectX® 10
Dual independent display support
16.7 million colors
External resolution / refresh rate6:
VGA port up to 2560 x 1600: 60 Hz
MPEG-2/DVD decoding
WMV9 (VC-1) and H.264 (AVC) decoding
Audio One built-in mono speaker
Built-in microphone
MS-Sound compatible
Storage 160/250/320/500/640 GB or larger1, 7,
8X DVD-Super Multi double-layer drive:
Write: 24X CD-R, 16X CD-RW, 8X DVD-R, 8X DVD+R, 4X DVD-R DL, 4X DVD+R DL, 6X DVD-RW, 8X DVD+RW, 5X DVD-RAM
Communication Acer Video Conference1, featuring:
Acer Crystal Eye webcam with 1280 x 1024 resolution
WLAN1, 8, 9,:
Acer InviLink™ Nplify™ 802.11 b/g/n Wi-Fi CERTIFIED™
Acer InviLink™ 802.11b/g Wi-Fi CERTIFIED™
Supporting Acer SignalUp™ wireless technology
LAN: 10/100 Mbps Fast Ethernet
Input and Control 99-/100-/103-key keyboard with inverted "T" cursor layout
Touchpad pointing device
Easy-launch keys: touchpad lock, communication
8 function keys, four cursor keys, two Windows® keys, independent numeric keypad, international language support
Media control keys (printed on keyboard): play/pause, stop, previous, next
I/O Ports Two USB 2.0 ports
External display (VGA) port
Headphone/speaker/line-out jack
Microphone-in jack
Ethernet (RJ-45) port
DC-in jack for AC adapter
Software12 Productivity
Acer Backup Manager1
Acer ePower Management1
Acer eRecovery Management
Adobe® Flash® Player 10
Adobe® Reader® 9.1
Google Toolbar™
Microsoft® Office Trial (Service Pack 2)
Microsoft® Works SE 91 (Brazil, Canada, France, Germany, Poland, Russia, UK and US only)
Microsoft® Works 9
Microsoft® Works 8.5
Norton™ Online Backup
McAfee® Internet Security Suite Trial12
Cyberlink® PowerDVD™
NTI Media Maker™
Oberon GameZone1 (except US, Canada, Hong Kong, Korea)
WildTangent®1 (US, Canada only)
Communication and ISP
Acer Crystal Eye
Microsoft® Silverlight™
Windows Live™ Essentials — Wave 3.2 (Mail, Photo Gallery, Live™ Messenger, Movie Maker, Writer)
Web links and utilities
Acer Assist
Acer Identity Card
Acer Registration
Acer Updater
eBay® shortcut 20091 (Canada, France, Germany, Italy, Mexico, Spain, UK, US only)
Netflix shortcut1 (US only)
Dimensions / Weight1 372.3 (W) x 246.5 (D) x 26.8/39.6 (H) mm (14.4 x 10.8 x 1.1/1.5 inches)
2.7 kg (6.0 lbs.)10 with 6-cell battery pack
Power1 ACPI 3.0 CPU power management standard: supports Standby and Hibernation power-saving modes
3-pin 65 W AC adapter:
108 (W) x 46 (D) x 29.5 (H) mm (4.25 x 1.81 x 1.16 inches)
225 g (0.49 lbs.)10 with 180 cm DC cable
48.8 W 4400 mAh 6-cell Li-ion battery pack
Battery life: 3.0 hours11
Windows® Life without Walls™ Acer recommends Windows 7.
Specifications vary depending on model.
64-bit software is required to enjoy the advantages of 64-bit processing.
Up to 1 GB of available system memory may be allocated for system resource requirements.
Shared system memory may be allocated to support integrated graphics, depending on system memory size and other factors. Actual system memory available to the operating system will be reduced by the amount of dedicated and shared system memory utilized by the graphics solution and resources required by the operating environment.
A 64-bit operating system is required to enjoy the ultimate performance of 4 GB memory.
Resolution/refresh rates depend on display capability and color/depth settings.
1 GB is 1 billion bytes. Actual formatted capacity is less and may vary depending on preloaded materials and the operating environment.
Actual throughput may vary depending on network conditions and environmental factors such as network traffic or overhead, building construction, and access point settings.
Acer Nplify™, a high-throughput wireless solution, delivers superior performance and reliable connections while enabling emerging voice, video and data applications. Wi-Fi CERTIFIED™, it supports Acer SignalUp™ wireless technology and is compliant with 802.11a/b/g/n and 802.11b/g standards.
Weight may vary depending on product configuration, vendor components, manufacturing variability, and selected options.
Your computer's battery life may vary depending on product specifications, computer settings, and applications or features launched. The listed battery life is for individual battery packs tested with MobileMark 2007 in productivity test mode and with wireless connection on. All batteries' maximum capacity will diminish with time and use.
Trial periods vary depending on the geographic region and specifications: 365-day trial for China, Taiwan, Hong Kong and Singapore (Simplified Chinese and Traditional Chinese OS models); 60-day trial for other regions.

Please not respond with: buy a new pc or throw it away or something like that.

2 answers Last reply Best Answer
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  1. Best answer
    Run IObit GameBooster prior to launching games on that laptop.
    - It comes with heaps of pre-installed software that eats up RAM.
    - It only has an Intel GMA GPU, which is the weakest GPU line available in laptops; even the Intel HD ~3000 series leaves that in the dust and most people wouldn't recommend either for playing 3D games.
  2. Also, make sure the bottom of your laptop has airflow.
    - Do not game on that machine with the laptop sitting on you, or on fabric or an uneven surface as it will overheat and slow down until it has cooled down enough.

    It is for this reason that I run an Ultrabook (which only has marginally better 3D graphics performance, but they don't overheat).

    You may also want to try PrBoom to Quake 2/3 or RTCW era games, or maybe even Half-Life2: Source (max, probably just half-life[1]: source or earlier), newer games will be far to heavy for that machine.

    You could upgrade it to 4GB of RAM too...
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