Well, tyre condition does not work in HUD Dash atm i think, but otherwise it's a beauty. It runs stable (what version are you using, there were at least two new versions in last two weeks) and you can remove potential lags by simply selecting another polling interval (three options) on the server side.I use Dashmeter Pro: it is not the most nice looking app but, at least, for me it is the most stable ( + it has tyre condition display). I nearly never have freezes or lag with this app.
I think Hud Dash could potentially be the best: it looks nice, it is very ajustable... but I cannot do two laps in a row without having lags.
I am currently also using PCars Dash: the new version has a new screen for car monitoring (all temperatures and conditions). I run it on a tablet on the side of my wheel: it is very nice in combination with Dashmeter pro configured just to have Gear / Speed / Leds.
I know: i tried all that can be tried to make hud dash work properly and I had hopes for the recent builds: I think sadly it is just less compatible than other apps.t runs stable (what version are you using, there were at least two new versions in last two weeks) and you can remove potential lags by simply another polling interval