Mouse Response Sluggish

It depends on the type of mouse you have.

If you have a wireless mouse with a dongle in a USB port it could be the battery in your mouse.

If you have a corded mouse, then you have to troubleshoot the reason.
 
​I cannot add much different. If you have had the mouse a while, and a new battery does not help, it may be time to retire it. I had same issue, and was immediately resolved with a new one.
 
My wireless mouse began to move erratically. I thought probably I needed to change the battery, so I opened the battery case and pushed on the battery to make sure it hadn't loosened up (because it sometimes fell off my desk) and so I pushed on it and turned the battery around a little and now the mouse is working perfectly fine.
 
If it's a mouse with a ball, it (probably) needs to be cleaned.
There is a flat ring on the bottom of the mouse that holds the ball in. Turn it CCW to open it. Turn the mouse back over, the ball will fall out.
Inside the mouse, where the ball was, are two rollers (at 90 degrees to ea other). Scrape the gunk off them with a small screwdriver tip or a fingernail file.
I did computer support for 20 yrs. I've done this many (many) times.
 
Next time give him some coffee

iu
 

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