I just checked my own setup to compare, not really sure why recording doesn’t work properly for you.
However, I have left the “Source” on my guitar track unassigned (no source needed since the track will get the actual recorded audio). Maybe that makes a difference.
To get rid of the latency, I think you’ll need ASIO drivers.
I installed the ASIO4ALL drivers on my machine (do a google search).
Inside Podium, you can then go to Setup -> Interfaces -> Audio I/O and change the “Audio Driver Type” to “ASIO Drivers”, then you should be able to select ASIO4ALL as ASIO Interface.
Then just make sure to select the correct inputs/outputs you want to use.
The audio interface you use to record guitar may have come with its own ASIO drivers, so these could work as well.
I’ve rarely experienced issues with this setup, usually a quick restart of Podium has solved them.
Hope this helps!