Are you certain it has a 144 hz refresh rate?

Yes, the monitor is 144 hz. Whether the gtx 1060 can push 144 fps in the game you are playing or not is a different issue, totally unrelated. If you want 144 fps in the gpu-intensive game you are playing, you need to compromise; lower the graphics settings until you get there.

does every single model of this computer throttle because of overheating or is it just a common issue?

Throttling is because the TDP of Intel Processors placed into high-performance laptop/mobile platforms rely on marginal resource utilization (base clock frequency of 2.2GHz). It's just not reasonable to expect a 6-core, 12-thread processor to run at boost speeds nearly 2.0GHz over that of base frequency and have a dedicated graphics solution running full-bore too. That's why the TDP rendered 45W isn't based on boost speeds. Tweaking voltages and current limits with Intel Extreme Tuning Utility paired with cooling/chilling pad that aid to force air into the bottom of this machine goes a long way to extract performance from the platform. The density of components in a laptop platform just cannot deliver the expectation many have- that performance is like that of a same-generation desktop processor in mobile format. This is not an Acer-specific symptom of the inaccuracy the processor maker uses, intentionally vague language, to leave folks to assume that expectation that isn't met. By using XTU, you can shift the limit to that of current, rather than thermals; an indication that the chip maker is responsible for your failed expectations. I really like the laptop and really like the Intel CPU inside; but, I had realistic expectations going in.

What kind of warranty does it come with? Any idea of the turn around time when shipping it in for service?

This comes with a 2-year manufacturer's warranty against hardware defects. Turnaround time is 7-10 days once the system is received in. Warranty details are posted here for your convenience: https://www.acer.com/ac/en/US/content/standard-warranty

Total USB Ports	4
Hardware Connectivity	USB, HDMI, Bluetooth 5, Secure Digital Card
Number Of Ports	2
Total HDMI Port	1
Colour	Black
Video Processor	NVIDIA
Chipset Type	intel
Hard Drive Interface	ATA
Graphics Description	NVIDIA GeForce GTX
Item Weight	5.51 Pounds
Hard Drive Size	256 GB
Graphics Co Processor	NVIDIA GeForce GTX
Operating System	Windows 10 Home
Optical Device Type	No Optical Drive
Graphics Ram Type	GDDR5
Automatic Backup Software Included	Operating System Only
HardDisk Rotational Speed	5400 RPM
Camera Description	Front
Product Features	anti reflective
Biometric Security Feature	Fingerprint Recognition
Graphics RAM Size	6 GB
Hard Disk Description	SSD
Voltage	240 Volts
Specific Uses For Product	Gaming
Form Factor	Traditional Laptop
Computer Wireless Type	802.11ac
Network Connectivity Technology	Bluetooth, Wi-Fi, USB, HDMI
Cellular Technology	Wifi
Wireless Technology	Bluetooth
Bluetooth support?	Yes
Display Technology	LCD
Scanner Resolution	1080p
Display Type	LED
Native Resolution	1920 x 1080 pixel
Screen Size	15.6 Inches
Maximum Display Resolution	Full HD (1920 X 1080)
Battery Life	7 Hours
Battery Cell Type	Lithium Ion
Lithium Battery Energy Content	32 Watt Hours
Number Of Cells	4
BatteryAverage Life Standby	7 Hours
System RAM Type	DDR4 SDRAM
RAM Memory Installed	16 GB
Memory Clock Speed	2666 MHz
Memory Speed	2666 MHz
Ram Memory Maximum Size	32 GB
RAM Memory Technology	DDR4
Control Method	Touch
Human Interface Types	Keyboard, Touch Pad, Numeric Keypad
Keyboard Description	Backlit
Audio Output Type	Speakers
Processor Brand	Intel
Processor Count	6
Processor Type	Core i7
Processor Speed	2.2 GHz
CPU Model Number	Core i7-8750H

Acer Predator Helios 300 Intel 15.6 inches PC Gaming Laptop (16GB, NVIDIA Graphics, 1920 X 1080 - Full HD, LCD, Windows 10 Home, 2.49929192 kg)

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