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Vansen · 08-14-2017, 01:26 AM

I have been able to reproduce mouse and keyboard lag under 2 specific circumstances under all my Win 10 Win 7 test laptops, as describe below and would like to to see if there is any work around?

1. Website causing high CPU and high rate of screen redraw: http://www.digitalreasoning.com/
- Open that page with Chrome and maximise the screen on your external monitor.
- If you were to scroll down to the middle of that page, you would see vertical "matrix style" scrolling text. Your mouse and KB should start to lag.
- If your were to bring up your task manager and look at CPU usage you should see at 100%
- If you scroll down the bottom of the page (100% static page) your mouse and KB would return to normal and the CPU usage would drop.
- If you were to un-maximise the window and make it smaller and return to the "Matrix text" the mouse and KB lag will be greatly reduced.
- If you were to complete the above tests with IE you will not notice the mouse and KB lag.

2. Excel Benchmark. Download the Benchmark_ET.xls from:
http://exceltrader.net/984/benchmark...k-for-traders/
- Open it in excel, enable macros maximize on your external display.
- Start the benchmark.
- You will see that the last 2 test, where excel is rapidly changing cell values, your mouse and KB will lag and your CPU very high.
- If you were to re-run the benchmark and but then minimized the excel screen you will notice the mouse and KB not lag but the CPU remain very high.

Any thoughts? Or is the CPU utilization the choke point in both these scenarios and we've hit a limitation of the DisplayLink solution??

08-14-2017, 01:26 AM	#1
Vansen Junior Member Join Date: Aug 2017 Posts: 10	Extreme mouse lag with Chrome and Excel I have been able to reproduce mouse and keyboard lag under 2 specific circumstances under all my Win 10 Win 7 test laptops, as describe below and would like to to see if there is any work around? 1. Website causing high CPU and high rate of screen redraw: http://www.digitalreasoning.com/ - Open that page with Chrome and maximise the screen on your external monitor. - If you were to scroll down to the middle of that page, you would see vertical "matrix style" scrolling text. Your mouse and KB should start to lag. - If your were to bring up your task manager and look at CPU usage you should see at 100% - If you scroll down the bottom of the page (100% static page) your mouse and KB would return to normal and the CPU usage would drop. - If you were to un-maximise the window and make it smaller and return to the "Matrix text" the mouse and KB lag will be greatly reduced. - If you were to complete the above tests with IE you will not notice the mouse and KB lag. 2. Excel Benchmark. Download the Benchmark_ET.xls from: http://exceltrader.net/984/benchmark...k-for-traders/ - Open it in excel, enable macros maximize on your external display. - Start the benchmark. - You will see that the last 2 test, where excel is rapidly changing cell values, your mouse and KB will lag and your CPU very high. - If you were to re-run the benchmark and but then minimized the excel screen you will notice the mouse and KB not lag but the CPU remain very high. Any thoughts? Or is the CPU utilization the choke point in both these scenarios and we've hit a limitation of the DisplayLink solution??