Panasonic Lumix G9 II Help, Please?

[Hugh]

I want to access high frame rates (over 60 fps using an SSD) on my G9II and I know it can be done up to 300 FPS because I already did it once, plus, this video shows how to do it:

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www.bing.com



I went back to my camera and tried to access 300 FPS again and now it won't allow me to go over 60 FPS on the S&Q dial! What happened between the first time it worked and now? Has anyone else had this issue and how can I fix this? I'd be grateful for assistance!

 

[Hugh]

Also, I own TWO G9 II cameras and BOTH are doing the same thing. Latest firmware on camera and SSD through Samsung Magician. Best and fastest USB-C cable, too. Remember, it worked ONE TIME! Then I went back (after lunch) and now it won't go over 60 FPS. Nothing is greyed out in the menu. There are just no more FPS options after the 60 where, the first time I tried it, it gave me the choice to go all the way to 300 FPS.