Hi Mike,
thanks for your reply!
I had the problem everytime I created a new track in Reason, added the VST3 plugin and selected a preset. The low overdrive/output affected every preset. Same effect with older projects, where I exchanged the VST2 against the VST3 selecting the same preset.
But, good news! I reinstalled my windows system the last few days, as well as Reason and all my music production plugins. Now the VST3 seems to work properly.

Maybe there were too much old data and programs disturbing each other on the system

Sometimes a new installation can help :mrgreen:
If I'll get problems again, I'll open a ticket. Thanks!
Greetings
Max