Issues, bugs, any fixes?

So I had the highest of hopes for these cameras.
I’ve tried blink, they’re slow almost unusable.
So I swapped to the eufy cam 2 pros, they trigger late, have huge delays in the audio that is picked up if there even is any, the video jumps, I could understand a lag in live streaming feeds but not recorded video, there shouldn’t be any at all.
I do have a solid brick house which I’m assuming affects the consistency of signal, again this should only affect the streaming. I chose these because there’s no subscription and there shouldn’t be for personally monitored cctv. I just don’t understand what I need to do to get cameras that actually record wtf they’re looking at in it’s entirety.