New ERG drop out

On a Wattbike atom. Since the last 3 upgrades (including 21st Nov update) having problems with ERG giving up after 20 minutes. Updated wattbike hub app and Zwift companion but problem still occurs. Anyone having similar problems or solved it?

Possibly related?

I do remember when i first started on Zwift with the Wattbike having a similar problem to that post. The bike was too slow to respond to in game changes-was usually only a problem if you had a 30s interval or shorter. Dammed if I know what happened to fix it. Then had at least 2 years of reliable usage. ERG has become almost unusable.