Small update.
As time went on I started having more and more frequent pop ups by Outpost Firewall 9.3 on windows start-up (original issue)
1. I downgraded avast to previous version 11.xx and all was solved but that wouldn't be wise as antivirus it's more important due to frequent definition updates in which case firewall doesn't require database updates, rules are simply set and that's pretty much it.
2. I than went back to Outpost 9.1 and latest version of avast and it works flawlessly as it should I forgot to mention when Outpost 9.3 was in compatibility mode I know this sluggishness of my PC and I have pretty powerful workstation e.g. 64GB ram and 4960X CPU at 4.9GHz, yet still slowly I could see the overtaking by Outpost.
The other day I spoke with Agnitum and although I already was aware that OFP 9.3 was aimed totally at Win 10 I still decided to update to 9.3 at its official launch, that was premature on my part I will not be upgrading my Win 7 Pro for the next 4-6 years so 9.1 is perfect for Win 7.
Maybe when Win 7 will stop getting support I will upgrade to win 10 I have Outpost 9.3 saved for that, for now OFP 9.1 and avast work great.
I thought I give a little update and heads-up for whomever find itself in similar situation.
Btw. I will not get rid of Outpost, its beyond any other firewalls out there...sad that it's no longer supported, avast + Outpost Firewall = great combination, but anyone who has the same setup I'm sure already know that.