Ring Floodcam Pro freezing recordings and missing motion

My FloodCam Pro recordings freeze very frequently and the rest of the motion/recording is lost even when I know there is continued motion (I've even tried going out myself and walking around - sure enough only part of my motion is recorded, the rest frozen/gone). I've tried every different Video Recording Length setting, that doesn't fix it. I replaced my router, but that didn't fix it. I had my internet provider out today check all my connections and signal - they say it's all good, but I still have this ring recording issue. I don't recall ever having this problem with my older (not PRO) floodcam but after upgrading to PRO I've have it constantly (since it was installed). I also have a problem of it writing over recordings so data/motion is lost forever. I've called Ring Support - they're really useless & it's frustrating. They just blame problems on others. I'm not a techno wiz and would appreciate some plain language help/advice pls.