I've had two issues on longer flights in DCS where my stick went completely dead. Going from full F

I've had two issues on longer flights in DCS where my stick went completely dead. Going from full FFB to nothing and no buttons working. I was able to solve it by hitting the killswitch and then turning it back on and the stick came right back to life both times and functioned just fine until the end of the flihgt...but, I'm wondering if anyone has any ideas on a potential cause I could investigate a fix?
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