Komoot

Processing power, memory, battery life... Don't think the issue is there with a Venu 2!!

I would also appreciate to see support for KOMOOT.
VENU 2 is supposed to have a processor from the ARM Cortex-M4 family.
Hard to find detailled  specs about the other watches, which would make it easier to compare capabilities....

Not sure how it works on the Venu 2, but there's a suite of apps on GC named r.485 or something like that.  It offers trails, turn by turn, etc through the apps there.  They're not free, but I believe it will do what you're wanting.

Just checked it out on the "Outdoor Master" portion of the r.485 suite, and yes, you can export a .GPX file from Komoot, and load it into the Outdoor master app, then forward it up to the watch.  A couple steps extra, but "it can be done". :D  Hope this helps.

I didn't find "Outdoor master" ....

except it is available on the venu 1, making this a moot point

I have been using DwMap for getting the map and turn by turn direction on my Vivoactive3 and now my Venu 2.
dwmap can import route from many platform (via web, from the route URL!) and send it to the watch automatically.
I use OutdoorActive to plan my route and download them automatically via the excellent dwMap Chrome extension, with a single click on an icon!)
You then get the map onto your watch as a datafield. During your activity, the map is downloaded via your phone and shown on your watch (you can zoom in and out). You can see your route, direction elevation profile, turn by turn with alert, off route etc etc... many customisation etc, worth a look.
The maps on the High Res screen of the Venue 2 look great! 
Importing Routes – dynamicWatch Help Center (zendesk.com)

Venu 2 has a Cortex M33 processor from NXP Semiconductors. i.MX RT 5xx

Thanks for the info. Where do you have this from?

How does the M33 compare to processors in Fenix 6?