What intensity would you recommend for the -ethi? What is teh range of the intnensity? 0-16 or higher?

Yes it is a good idea to set some timeout in .bat file before starting miner at system startup (30sec or even a minute), and try "-ethi 4" to check if it is more stable. It can help if miner is not stable on some system. Note "-ethi 4" can reduce mining speed a bit.
Added to OP.

ping 127.0.0.1 -n 30
Works OOB on all Windows versions since 95

That is a good tip, since the timeout conmand does not exist in older Windows versions.

Ive noticed that my desktop is laggy when using two cards (both AMD), however with a single card it works fine.

niiice! thx!

I upgraded to 16.4.1 without pasting DLL files and still getting, no getting even better hashrates than before....

You can update or downgrade use what ever driver u want if you have the dll's in your miner dir, the miner will use those dll's before searching for installed ones.

I have got best results on suprnova.cc pool.

Good afternoon.
Firstly thanks for the miner. It's great!

Secondly, I want to ask for help clarification. I know it's probably not a good topic for that, but I see people here experienced.
Question about Dekred mining.
In priogram I see constant speed DCR (550MH) but the site show me jumps from 300 to 600 ... (Not onle this miner, in all that I use. T try on coinmine and suprnova.)
And I am very confusing section block progress on the site.  I think it should be from 0 to 100%, and I have it often passes for 100% and get 130 ... 150, and even 420%
Accordingly, there is no reward for this time ....
If necessary, I can show a screenshot.

Sorry for mistakes, English is not my native language.