Review on Amcrest NV4116-HS Network Video Recorder (16CH 720P/1080P/3MP/4MP/5MP/6MP/8MP/4K) - Supports up to 16 x 8-Megapixel IP Cameras, up to 6TB HDD Capacity (HDD Not Included) by Jerry King

I bought this and hooked up 9x 4k cameras to it and it was so slow I couldn't play it at all after about a week of recording. I could see it was being recorded and I called tech support and they had a remote session and told me it wasn't working properly and I needed to submit an RMA for it. After I submit an RMA, I submit it, and that's after 15 times the number of emails, 10 phone calls, and three weeks. I finally found someone who could find out what happened to him. I received an email the same day that it was on its way. Cody A. from the RMA department is to blame for being such an irresponsible layman. I installed a new one for now and set up the DVR and after a few days I tried the device but there is still no playback. I've called and emailed several times but still no response. Terrible company and terrible product.