The cloud API doesn't really use the DPS system, that is for local communication. I tried using a local only driver but found it was not that reliable for status updates, possibly because I have Alexa directly connected to SmartLife for this one LED Strip I have. If you have all connections go through the hub a local only driver would probably work good.
Anyway, I ended up keeping this cloud setup but found the author has a few example child drivers that you can drop in, which enable local communication for any device you switch to it. I made some modifications to it as well which I posted in a Gist, linked here: Discussion of local control of Tuya Smart Wifi devices without flashing firmware. Feel free to reply back on that thread if you have any questions about the local control or how to get your device to work.
There is also these drivers from @holand.ivar which are standalone local drivers: hubitatappndevice/Device/tuyaDevices at master · ivarho/hubitatappndevice · GitHub . He has a few posts on the forums in various places.
Since a lot of the Tuya devices are slightly different you will probably end up having to change a lot of the code to get everything to work right, but all the communication stuff is in there which gets the hard part out of the way.
