Razor Viper 8kHz fps drops

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I have a somewhat annoying intermittent issue with my Razor Viper 8khz.
When I run it at 8khz, and move the mouse around really fast, I sometimes experience a significant framerate drop (in a game where I cap framerate far below the minimum framerate I'd normally experience). It can drop up to perhaps 20% below the framerate limit.
If I lower it 4khz, this doesn't happen.

What I find odd is, it was working fine at 8khz for like a year without any issue. Also, sometimes it doesn't happen, I thought I had fixed it by simply changing the DPI setting in the software and then it was fine locked at stable fps, but then another day having rebooted the PC this issue came back. This is why I don't think it's simply a case of my CPU (5900X) being too slow to handle 8khz, because it used to be absolutely fine. In fact I tested it just now while writing this post, and the drop isn't happening right now. But maybe later today or tomorrow it will come back.

Has anyone else had a weird issue like this? I was wondering if it somehow related to whether I'm using multiple monitors, or have some app running in the background, but I've not been able to isolate it as yet. Like sometimes it happens, I'll shut down all apps except the game, and it still happens. Today I'm sat here with Chrome open and it's working fine...
 
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Have you monitored CPU usage when this happens? Wondering if it's a core utilisation and windows schedule conflict.

Not sure what the fuss is about with such a I polling rate though really, that's so high it's a marketing gimmick.
 
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It's likely caused by straining the CPU. Higher polling rate = more CPU strain to keep up. Anything above 1khz is a gimmick. Deep analysis may prove it's "faster" but you won't notice anything but placebo.

Some people can't even tell the difference between 500 and 1k...
 
It's likely caused by straining the CPU. Higher polling rate = more CPU strain to keep up. Anything above 1khz is a gimmick. Deep analysis may prove it's "faster" but you won't notice anything but placebo.

Some people can't even tell the difference between 500 and 1k...
I am going to agree with this I have a Raxzer Viper and I use 1000hz on it, does me just fine and I feel like going over that makes little to no difference to your actual gaming skill much like going beyond like 1600 DPI.
 
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