Insert max out at 1 million keys

I have an index where im trying to insert more than 1M json docs. My issue here is that it stoppes inserting after 1M, i dont get any error from the insert itself, that just continues, but nothing gets added after 1M. I guess im missing something wrong, can anyone give me a hint as to where im failing? Im using redis insight running DBSIZE.1M

Im running a Docker redis-stack-latest and using RedisOM .NET