I have the same card. Looking to upgrade it though because of the memory. I'm eyeing a 6GB card now.
With the older version of deepstack every custom model used ~900MiB of memory. With the latest version of deepstack I noticed it was bumped up to 1400MiB, so I started having problems when multiple custom models were used. I ended up downgrading for now.
GTX `650 in multiple Blue Iris machines.
Works great on 12 plus HD camera installs.
If I had to pick a downside is that it spends majority of time idle and uses more power than on the GPU on the CPU.
been running the GTX1650 for about a week no, I'm just glad that the PC isn't crashing anymore, I think the DS response time is averaging 400-500 ms for me with 6 or 7 cameras