I always run my prewired cable on the 'outside' of the conduit to the location. Leaving the conduit empty, so I don't run into issues trying to stuff something in it.

As Bob mentioned; Cat6 (a couple of them), a pair of fiber cables (MM w/LC connectors), and a good pre-made HDMI.

One note: Not sure about where Bob's at but for us, getting a 2" PVC conduit in on most homes doesn't work.
Building code in the US =
Non-load bearing 2x4 no larger than 2 1/8" hole. 2x6 no larger than 3 1/4".
For load bearing 2x4 no larger than 1 3/8" hole. 2x6 no larger than 2 1/4".

Sometimes a 1" conduit is all we can install and pass code. Most times we can get a 1.5" PVC conduit in. Rare we have a 2x6 header we can drop a 2" down.

Now if you are talking metal thinwall conduit, you can drill holes for a 2" in a 2x4 non-load bearing. I don't have any experience with metal conduit, not needed for LV in our area (or most HV either except commercial).