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I understand your frustration with the performance issues you're experiencing while using Amazon Lex on battery power. While AWS services are primarily processed on the server-side, the client-side interface can still be resource-intensive, especially for complex services like Amazon Lex.
The lag you're experiencing could be due to a combination of factors:
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Power management: When on battery, your laptop may be throttling performance to conserve energy. This can affect CPU and GPU performance, leading to lag in resource-intensive web applications.
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Browser settings: Disabling hardware acceleration in Brave browser, while solving your screen blackout issue, may be contributing to the performance problem, as it shifts more work to the CPU.
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Operating system power settings: Windows 11 may be applying aggressive power-saving measures when on battery, further limiting performance.
To potentially improve performance without plugging in your laptop, you could try:
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Adjusting Windows power settings to favor performance over battery life when using Amazon Lex.
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Closing unnecessary background applications and browser tabs to free up system resources.
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Clearing browser cache and cookies regularly.
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Trying a different browser to see if the issue persists.
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Ensuring your laptop's cooling system is clean and functioning properly to prevent thermal throttling.
If these steps don't help, you may need to use your laptop while plugged in for the best performance when working with Amazon Lex. Unfortunately, some web applications can be quite demanding on system resources, and battery-saving measures can significantly impact their performance.
Regarding your device specifications, while they are generally capable, the combination of battery power, disabled hardware acceleration, and potentially aggressive power management might be creating a perfect storm for performance issues with complex web applications like Amazon Lex.
It's worth noting that AWS continuously works on improving their services' performance and efficiency. If this issue persists, consider reporting it to AWS support for further investigation and potential optimization of the Amazon Lex interface for battery-powered devices.
Sources
How to prevent AWS DeepRacer vehicle battery lockout - AWS DeepRacer
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Changing my power plan from best power efficiency to best performance didn't improve anything; I already dealt with thermal throttling last month (unrelated to AWS); and I literally just cleared all browser data a few hours ago (also unrelated).