DaVinci Resolve is suddenly running slowly

I removed USBs, changed my USB cable to thunderbolt and restarted and it fixed it for me.

I was luky to SOLVE it !!!

I work on a recently upgraded W11PRO from W10PRO, on a self buit PC, i7, 64 RAM and RTX2060 KO.

Personally the problem was driving me crazy as I have a medium, good machine.

Long story short: I placed my computer on plane mode (no wifi, no bluetooth) and worked again. The problem only was coming back when I turned BT back on. I checked my BT devices, actually only two werte used at that time (logitech keyword and Davinci Speed Editor).

Davinci SE keyboard was showing an strange behaviour on BT devices as "connected / disconnected" at intervals of about a second.

I throw BMSE device away. Then I added again the Speed Editor to bluetooth devices in my PC and voila. I had my computer back to life !!!

At the same time, I also had an issue with "Nucleus Aisle on Windows Security" (I do not think this is correct in English), caused by a file or app named ftdibus.sys which I fixed previously to apply for the fix here explained.

THIS MAN IS THE BEST HOLY CRAP YOU JUST SAVED ME SO MUCH TIME! IVE SPENT 3 DAYS TRYING TO FIGURE OUT THE ISSUE! THANK YOU!

I'm on Studio 20b, and I was pulling my hair out! I just found this! Thanks!

I don't know why this happens, but it's easily solved by just plugging in the Speed Editor using an USB-cable. I guess that also disables the Bluetooth connection.

Just removing and adding the Speed Editor using Bluetooth didn't solve it for me.

EDIT:
I have now double and triple confirmed this. Unplugging the Speed Editor to make it connect using Bluetooth grinds Davinci Resolve 20b to a almost complete stop, giving me 2-3 fps on Quarter resolution playback. Plugging it back in makes DR incredibly fast, steadily 29.97 fps with full 4K video.

Is there somewhere to report bugs?
EDIT 2: I found it on the /support page.